1000 Sentences With "cyclonic" | Random Sentence Generator

Previously categorized as a Super Cyclonic Storm, Kyarr has weakened to become an Extremely Severe Cyclonic Storm, according to a statement from the Indian Meteorological Department.

A long, oval-shaped "brown barge" on Jupiter—a transient cyclonic system.

Hurricanes are large low-pressure systems that create a cyclonic wind effect.

This suggested that the hurricane's cyclonic structure was beginning to come apart.

MAIZE: And in Saturn, it is just cyclonic rims, a jet stream size.

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These storms spin in an anti-cyclonic direction, similar to Jupiter's famous Great Red Spot.

Upper-level (tropopause) animation shows textbook "cyclonic wrapup" we see w/baroclinic storm development. pic.twitter.

The air starts to move, and the rotation of the earth creates a cyclonic effect.

The air starts to move, and the rotation of the Earth creates a cyclonic effect.

She brought to the part a cyclonic determination that was matched only by her natural talent.

Pick up the Kalorik 2-in-1 cordless cyclonic vacuum for $149.99, a savings of 31%.

It's powerful enough to clean up big messes, and the cyclonic action keeps the filter clean.

Bissell Cleanview Deluxe Rewind Upright Vacuum — The Bissell Cleanview Deluxe uses cyclonic technology and is a true powerhouse.

The cyclonic winds of global populism that Breitbart had hoped to ride have, at least for the moment, calmed.

Mr. Gethard moves back and forth through his cyclonic bouts of depression, which recurred throughout his teens and 20s.

Bradley, a rookie, swept the veteran Mickelson along in his cyclonic enthusiasm during the Americans' upset loss to Europe.

December is the beginning of the Southern Hemisphere summer and the season brings cyclonic rains to the country's far north.

The new anti-cyclonic storm, seen at the top center of the photo above, is about 11,000 kilometers (6,800 miles) across.

Enter a sleek, ergonomic design, powerful cyclonic suction, and an ingenious bagless dirt collection system … and so the Dyson vacuum was born.

" Tens of millions of people are potentially in the path of what the India Meteorological Department called an "extremely severe cyclonic storm.

Meteorologists were describing the storm as a "bomb cyclone," in which masses of warm and cold air meet, creating a cyclonic effect.

At this point, hurricanes need low wind shear — or a lack of prevailing wind — to form the cyclonic shape associated with a hurricane.

I had to spend four or five years coming up with different types of cyclonic separation devices in order to make it work.

The India Meteorological Department classified it as a "very severe cyclonic storm," a designation for tempests with wind speeds reaching 137 miles an hour.

But those who can seem to be doing it with remarkable regularity, both in spite and because of the country's cyclonic violence, especially recently.

Weather officials in Chennai issued a red alert to six districts on Sunday and warned fishermen against going to sea due to cyclonic storms.

Equipped with cyclonic technology, the Dyson V6 offers incredible suction power and can clean even the hard-to-reach areas of your living space.

The storm -- which has been downgraded to a "very severe cyclonic" storm -- is the first tropical cyclone of the year in the northern Indian Ocean.

The grill rack saturates your steaks, burgers, and more 500-degree cyclonic on both sides, so there's no need to flip and virtually no smoke.

In March 1990 a team at Dyson began work on a cyclonic filter that could be fitted on a vehicle's exhaust system to trap particulates.

In fact, if you read the IPCC report, there's no evidence climate change is contributing to an increase in rainfall or cyclonic [hurricane] events in Australia.

Dr. Bell said that in the late summer and early fall, conditions in the tropical Atlantic off Africa become just right for cyclonic storms to form.

The idea is to move the hands together in, up, and out so you're creating two circular, cyclonic waves that are going outward toward the anchor.

As Fani was classified as an "extremely severe cyclonic storm" in India, the country's coast guard and navy deployed ships and helicopters for relief and rescue operations.

Hoover's also equipped it with Dual-Cyclonic Technology, which prevents suction loss, as well as a HEPA Media Filter that traps 99.97% of teeny, tiny dirt particles.

The India Meteorological Department classified Cyclone Titli as a "very severe cyclonic storm," a designation for cyclones with wind speeds of 119 to 221 kilometers per hour.

The negative phase of the NAO is also associated with an anti-cyclonic circulation pattern in the atmosphere that helps draw up warm air from the south.

Image: NASA/SWRI/JPL/ASI/INAF/IAPS"The cyclonic structures we observed there, over the poles, do not exist in other planets of our solar system," Adriani told Gizmodo.

"The two basic fabrication materials are steel and acrylic," Webb said, noting that the structure must be able to withstand the punishment dealt out by hurricanes and cyclonic storms.

Westbrook's cyclonic game has fallen off some from his league most valuable player season in 2016-333, and he was never the easiest of point guards to play with.

It is likely to have moved west from a large cyclonic eddy formed southwest of Maui, Nikolai Maximenko from the International Pacific Research Center said in a press release.

India was in talks with Canada's Teck Resources Ltd for long-term purchase agreements after a cyclonic disruption in Australia cut supplies earlier this year, Reuters reported earlier this month.

The details: With maximum sustained winds of 115 miles per hour, the Indian Meteorological Department classifies it as an "Extremely severe cyclonic storm" — equivalent in strength to a Category 3 hurricane.

The best sculpture of the lot is at the Chelsea Boone: a magnificent twisting, almost cyclonic tree trunk whose massive branches are themselves bluntly attached tree trunks — an arboreal Frankenstein monster.

Also known as brown ovals, brown barges are large cyclonic regions that typically form in Jupiter's dark North Equatorial Belt or, less frequently, in the dark South Equatorial Belt, according to NASA.

An excerpt from the Canadian Encyclopedia explains the fate of the crew:Despite their steam engines, the sturdy ships were locked in the menacing ice, exposed to blizzards, frigid temperatures and cyclonic gales.

Last Sunday's tornadoes in Lee County, Alabama, were spawned by a late-winter "supercell" thunderstorm, ripping through homes and businesses with cyclonic winds of up to 170 miles (274 km) per hour.

The state of Odisha has also moved in thousands of disaster management personnel to help those living in mud-and-thatch homes in low-lying areas take shelter from Severe Cyclonic Storm Fani.

This Amazon's Choice product uses cyclonic action to keep the suction strong, and the transparent bag area will help them see when it needs to be emptied (because otherwise, they'll forget about it).

The cyclonic winds Juno discovered extend deeper into the planet than any similar weather pattern on Earth — as far as 1,900 miles, or 3,000 kilometers, into Jupiter, constituting about 1% of its mass.

The cyclonic storm brought about heavy rains this week in Sri Lanka, triggering two landslides that were feared to have killed around 2003 people and forced more than 223,000 persons from their homes.

But it's her cyclonic private life that fascinates as a multitude of producers, publicists, masseuses, doctors and makeup artists help manage her workday and the pain caused by a hip fracture in 2013.

A bomb cyclone can happen when a mass of warm air meets with a mass of cold air, and the air starts to move, with the rotation of the earth creating a cyclonic effect.

It has been ten years this month since the Arctic Monkeys released Favourite Worst Nightmare, a mere year and a bit after their tumultuous, cyclonic debut Whatever People Say I Am, That's What I'm Not.

The wind was then at cyclonic velocity, roofs, cisterns, portions of buildings, telegraph poles, and walls were falling, and the noise of the wind and the crashing of the buildings was terrifying in the extreme.

The Kalorik 2-in-1 Cordless Cyclonic Vacuum was designed with a powerful brush that adapts to different floor types (so it's easy to go from kitchen tile to living room hardwood in no time).

The V8 sports the same sleek look and lightweight feel of the V6, but with better battery life, stronger suction with cyclonic technology, an easier emptying process, and, according to reviews, is significantly less obnoxious sounding.

While they are not the oldest samples in the record—supposing you accept the provenance of the rocks described by Dodd, Komiya and Nutman—Schopf's and Valley's cyclonic miniatures do have an important distinction: They are diverse.

The email details how Dyson's original vision for the cyclonic motor that's a trademark ingredient in its hand dryers and vacuums was originally inspired by a desire to take emissions from diesel engines out of the air.

The Storm of the Century From March 12 to March 26, 2000, the East coast of North America was relentlessly pummeled by a cyclonic snowstorm that would come to be known as the Storm of the Century.

"[The collapse] resulted in cyclonic-type winds that has moved across the fire ground and has literally lifted up a 10- or 12-tonne firetruck and flipped it onto its roof trapping the people inside," Fitzsimmons said.

He called out the pessimistic rhetoric that powers his opponents on the right -- especially in this cyclonic election year where hyperbole and outright lies have become the norm -- and he underscored America's accomplishments as proof of our resolve.

Severe cyclonic storm Fani was churning up the Bay of Bengal about 420 km (260 miles) south-southwest of the Hindu temple town of Puri where special trains were put on to evacuate tourists and the beaches were empty.

Severe cyclonic storm Fani was churning up the Bay of Bengal about 3003 km (2300 miles) south-southwest of the Hindu temple town of Puri where special trains were put on to evacuate tourists and the beaches were empty.

Severe cyclonic storm Fani was churning up the Bay of Bengal about 320 km (198 miles) south-southwest of the Hindu temple town of Puri where special trains were put on to evacuate tourists and the beaches were empty.

The cost of landslides and floods after days of torrential rains will be between $1.5 billion and $2 billion at the minimum, the government said on Monday, as the Indian Ocean island struggles to recover from a cyclonic storm.

Droughts that last for five or six or even 10 years are common; cyclonic rains regularly bring floods to the northern part of the continent; every summer sees the inhabitants of the southern and coastal forests on bushfire alert.

The cost of landslides and floods, caused by days of torrential rain, will be between $13 billion and $2 billion at the minimum, the government said last week, as the Indian Ocean island struggles to recover from a cyclonic storm.

The tornadoes, spawned by a late-winter "supercell" thunderstorm, ripped through Lee County on Sunday with cyclonic winds of up to 22018 miles (261 km) per hour, at step four of the six-step Enhanced Fujita (EF) scale of tornado strength.

Cyclonic storm Fani, which has been churning up the Bay of Bengal, is currently about 150 km (93 miles) northeast of the Hindu temple town of Puri in the eastern state of Odisha, the state-run India Meteorological Department (IMD) said.

Dyson said his ambition to go it alone was driven by the car industry's dismissal of an idea he had of applying his cyclonic technology that revolutionised vacuum cleaners to handle diesel emissions in car exhaust systems in the 1990s.

The cost of landslides and floods caused by days of torrential rain will be between $1.5 billion and $2 billion at the minimum, the government said earlier this week, as the Indian Ocean island struggles to recover from a cyclonic storm.

The cost of landslides and floods caused by days of torrential rain will be between $1.5 billion and $2 billion at the minimum, the government said last week, as the Indian Ocean island struggles to recover from a cyclonic storm.

Get the Kalorik 2-in-1 Cordless Cyclonic Vacuum — $149.99 See Details If you think this cool smart light looks familiar, that's because it's from the same makers who brought you the Rossi diffuser at the top of this list.

James Dyson told reporters last year that his ambition to take on the car makers was triggered when the industry dismissed his idea to use the cyclonic technology that revolutionized vacuum cleaners to clean diesel exhaust emissions in the 1990s.

The cost of landslides and floods caused due to days of torrential rain will be between $13 billion and $2 billion at the minimum, the government said last week, as the Indian Ocean island struggles to recover from a cyclonic storm.

The cost of last week's landslides and floods after days of torrential rains will be between $13 billion and $2 billion at the minimum, the government said earlier this week, as the Indian Ocean island struggles to recover from a cyclonic storm.

The company revolutionised the vacuum cleaner market with its bagless cyclonic device in the 1990s and has since gone on to build air purifiers, hand dryers and fans from its base in south west England and manufacturing plants in Malaysia, Singapore and the Philippines.

A: Warm Gulf of Mexico waters helped give the storm its power, and there was an absence of wind shears, meaning changes in wind speed and direction, whose presence in the atmosphere can disrupt the structure of a cyclonic storm and remove heat and moisture.

The V10 sports the same sleek look and lightweight feel as the V6 and V8, but with better battery life (60 minutes on one charge), stronger suction with cyclonic technology, and the Dyson Digital Motor V10 (referred to by Dyson as the most powerful suction of any cordless vacuum ever).

Watch her straining against a cyclonic wind, to the sound of a Baroque aria, pelted by trash and tipping forward like Buster Keaton in " Steamboat Bill, Jr. " (1928), or sharing a red-lit, imaginary embrace with Orlando during a visit to the crematorium, as though he were still more flesh than ash.

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Kicking off with footage of a whale shark, the largest fish in the sea, the relaxation-fest stitches together calming clips of stingrays dappled with refracted sunbeams, dolphin pods breaching over whitecaps, sailfish corralling cyclonic schools of fish, blooms of jellyfish drifting with the current, and a lone tortoise making its way across the pelagic expanse.

Stepping before the cameras and tote board in front of a nation expecting to see familiar comedy, he revealed himself differently though, pleading "look into your hearts … and you will see behind the silly clown is a man who cares for children as you care … " At the end of a cyclonic 28-hour weekend, he'd raised $33 million, money largely dedicated to jumpstarting a French research project to create a map of human genetics.

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Cyclone Fani, one of the most recent extremely severe cyclonic storms, making landfall in Odisha. Behind super cyclonic storms, extremely severe cyclonic storms are the second-highest classification on the India Meteorological Department (IMD)'s intensity scale. There have been 31 of them since reliable records began in 1960. The most recent extremely severe cyclonic storm was Cyclone Maha in the 2019 North Indian Ocean cyclone season.

Extremely Severe Cyclonic Storm Hudhud was a strong tropical cyclone that caused extensive damage and loss of life in eastern India and Nepal during October 2014. Hudhud originated from a low pressure system that formed under the influence of an upper-air cyclonic circulation in the Andaman Sea on October 6. Hudhud intensified into a cyclonic storm on October 8 and as a Severe Cyclonic Storm on October 9. Hudhud underwent rapid deepening in the following days and was classified as a Very Severe Cyclonic Storm by the IMD.

On November 6, the remnants of Severe Tropical Storm Matmo traversed into the Bay of Bengal and developed into Cyclonic Storm Bulbul. The system quickly intensified into a Severe Cyclonic Storm over the next day. As it continued north, it then strengthened into a Very Severe Cyclonic Storm as the IMD issued coastal warnings for West Bengal. Bulbul underwent a rapid intensification, becoming a very severe cyclonic storm on November 8.

A Severe Cyclonic Storm is a category used by the India Meteorological Department (IMD) to classify tropical cyclones, within the North Indian Ocean tropical cyclone basin between the Malay Peninsula and the Arabian Peninsula. Within the basin, a severe cyclonic storm is defined as a tropical cyclone that has 3-minute mean maximum sustained wind speeds of between . The category was historically used to classify all tropical cyclones with winds above , however, it was bifurcated during 1988, when the IMD introduced a new category called Severe Cyclonic Storm with a core of hurricane winds. This new category was later further refined into Very Severe Cyclonic Storms, Extremely Severe Cyclonic Storms and Super Cyclonic Storms during 1999 and 2015.

Stormy is the cyclonic costumed mascot for Lake Erie College.

A Very Severe Cyclonic Storm is the third highest category used by the India Meteorological Department (IMD) to classify tropical cyclones, within the North Indian Ocean tropical cyclone basin between the Malay Peninsula and the Arabian Peninsula. Within the basin a very severe cyclonic storm is defined as a tropical cyclone that has 3-minute mean maximum sustained wind speeds of between . The category was introduced alongside the Super Cyclonic Storm category during 1999 in order to replace the previously used Severe Cyclonic Storm with Core of Hurricane Winds. However, it was bifurcated during 2015, when the IMD introduced a new Extremely Severe Cyclonic Storm category.

Severe Cyclonic Storm Jal was the fifth named cyclonic storm and the fourth Severe Cyclonic Storm of the 2010 North Indian Ocean cyclone season. Jal developed from a low pressure area in the South China Sea that organized into a Tropical Depression on . Jal is a Sanskrit word, meaning water. At least 54 people are known to have been killed in India.

However, during 2015 the category was bifurcated, after the IMD introduced a new Extremely Severe Cyclonic Storm category. As a result, very severe cyclonic storms are currently estimated, to have 3-minute sustained wind speeds of between .

A depression formed in the Arabian Sea on October 24, with IMD giving it the identifier ARB 03, later intensifying into a deep depression before JTWC recognized it as Tropical Cyclone 04A. It further intensified and became a cyclonic storm, receiving the name Kyarr from IMD as the fifth cyclonic storm of the season. On October 25, owing to high sea surface temperatures, low shear and a moist environment, Kyarr began a period of rapid intensification and strengthened into a very severe cyclonic storm. Three hours later, Kyarr became an extremely severe cyclonic storm.

Dyson DC07 upright cyclonic vacuum cleaner using centrifugal force to separate dust and particles from the air flowing through the cylindrical collection vessel Portable vacuum cleaners working on the cyclonic separation principle became popular in the 1990s. This dirt separation principle was well known and often used in central vacuum systems. Cleveland's P.A. Geier Company had obtained a patent on a cyclonic vacuum cleaner as early as 1928, which was later sold to Health-Mor in 1939, introducing the Filter Queen cyclonic canister vacuum cleaner.History of HMI Industries, Inc.

Over the following hours, the storm intensified into a severe cyclonic storm and further into a very severe cyclonic storm. Rapid intensification commenced and Chapala was upgraded into an extremely severe cyclonic storm on October 30. On November 3, it made landfall in Yemen as a very severe cyclonic storm, making it the first tropical cyclone at hurricane intensity to make landfall in the country on record. Chapala rapidly weakened over the mountainous terrain of mainland Yemen and was last noted as a low pressure area the following day.

Warm water temperatures of around , as well as low wind shear, fueled rapid intensification. Kyarr turned to the northwest away from India on October 26\. On the same day, the IMD upgraded the storm to a very severe cyclonic storm and later to an extremely severe cyclonic storm. Early on October 27, the IMD upgraded Kyarr further to a super cyclonic storm, the first one in the basin since Gonu in 2007; it was also the only recorded super cyclonic storm in the Arabian Sea to occur after the monsoon season.

The synoptic scale in meteorology (also known as large scale or cyclonic scale) is a horizontal length scale of the order of 1000 kilometers (about 620 miles) or more.American Meteorological Society. Cyclonic scale. Retrieved on 21 January 2017.

High rainfall events and storms of cyclonic strength can occur during the summer.

Mars has also exhibited cyclonic storms. Jovian storms like the Great Red Spot are usually mistakenly named as giant hurricanes or cyclonic storms. However, this is inaccurate, as the Great Red Spot is, in fact, the inverse phenomenon, an anticyclone.

However, multiple low pressure areas developed over the Bay of Bengal, with Cyclonic Storm Kyant forming in October and Cyclonic Storm Nada in November. Due to the presence of warm sea surface temperatures, Very Severe Cyclone Vardah formed in December.

The system will be classified as a cyclonic storm and assigned a name by the IMD, if it should develop gale-force wind speeds of between 34–47 kn (39–54 mph; 62–88 km/h). Severe Cyclonic Storms have storm force wind speeds of between 48–63 kn (55–72 mph; 89–117 km/h), while Very Severe Cyclonic Storms have hurricane-force winds of 64–89 kn (73–102 mph; 118–166 km/h). Extremely Severe Cyclonic Storms have hurricane-force winds of 90–119 kn (166–221 km/h, 104–137 mph). The highest classification used in the North Indian Ocean is a Super Cyclonic Storm, which have hurricane-force winds of above 120 kn (138 mph; 222 km/h).

Later that day, it intensified into a deep depression as it moved slowly north-westward.WebCite query result The IMD upgraded the system to Cyclonic Storm Sidr early on November 12.WebCite query result The system then began to intensify quickly as it moved slowly northwestward, and the IMD upgraded it to a severe cyclonic storm later that dayWebCite query result and a very severe cyclonic storm early the next day.

The country has a tropical, but moderate climate. Occasional cyclonic storms occur in January.

Construction of the station took seven years, with infrastructure built to withstand cyclonic winds.

It is most affected by the cyclonic storms that occur on the east coast.

The 2002 West Bengal cyclone (JTWC designation: 03B, officially known as Severe Cyclonic Storm BOB 03) was a deadly tropical cyclone that affected India and Bangladesh in November 2002\. The sixth tropical cyclone and fourth cyclonic storm of the 2002 North Indian Ocean cyclone season, it developed in the Bay of Bengal northeast of Sri Lanka on November 10, as a tropical depression. After tracking northeast, the system strengthened into a cyclonic storm on November 11, as maximum sustained winds exceeded 65 km/h (40 mph). On November 12, it further intensified into a severe cyclonic storm.

Subsequently, the IMD reported the storm had intensified into a cyclonic storm, and named it Nilofar. The following day, the IMD upgraded the storm into a severe cyclonic storm and further to a very severe cyclonic storm, and the JTWC reported hurricane-strength winds at Nilofar's center as it meanwhile developed an eye feature. On October 28, Nilofar underwent rapid deepening throughout the day, reaching a peak strength of with wind speeds exceeding , tied with Hudhud. Over the following days, the storm recurved northeastwards and experienced high vertical wind shear, causing it to weaken rapidly into a minimal cyclonic storm on October 30.

The 2019 North Indian Ocean cyclone season was one of the most active North Indian Ocean cyclone seasons ever recorded, featuring 12 depressions, 11 deep depressions, 8 cyclonic storms, a record 6 severe cyclonic storms, a record 6 very severe cyclonic storms, a record 3 extremely severe cyclonic storms, and 1 super cyclonic storm, Kyarr, the first since Cyclone Gonu in 2007. Additionally, it was also the third-costliest season recorded in the North Indian Ocean, only behind the 2020 and 2008 seasons. The season's first named storm, Pabuk, entered the basin on January 4, becoming the earliest-forming cyclonic storm of the North Indian Ocean on record. The second cyclone of the season, Cyclone Fani, was the strongest tropical cyclone in the Bay of Bengal by 3-minute maximum sustained wind speed and minimum barometric pressure since the 1999 Odisha cyclone, while being equal in terms of maximum 3-minute sustained wind speed to 2007's Sidr and 2013's Phailin.

The same day IMD upgraded the storm to a Very Severe Cyclonic Storm. By the 5th, the cyclone had been downgraded to a cyclonic storm by the IMD as it passed over the Gulf of Oman. On the 7th, Phet dissipated completely.

Cyclonic Storm Five briefly existed in the Arabian Sea from August 6 to August 7.

As such, only two cyclonic storms in the latter half of the year were named.

Wind factors and temperature and moisture are perfect during this time to encourage cyclonic activity.

The North Indian Ocean tropical cyclone basin is located to the north of the Equator, and encompasses the Bay of Bengal and the Arabian Sea, between the Malay Peninsula and the Arabian Peninsula. The basin is officially monitored by the India Meteorological Department's Regional Specialized Meteorological Centre in New Delhi, however, other national meteorological services such as the Bangladesh and Pakistan Meteorological Department's also monitor the basin. The Severe Cyclonic Storm category was historically used to classify all tropical cyclones with winds above , however, it was bifurcated during 1988, when the IMD introduced a new category called Severe Cyclonic Storm with a core of hurricane winds for all systems above . This new category was later further refined into Very Severe Cyclonic Storms, Extremely Severe Cyclonic Storms and Super Cyclonic Storms during 1999 and 2015.

With weak steering currents, the storm meandered over the central Bay of Bengal, executing a small cyclonic loop over 30 hours. The cloud pattern organized into a central dense overcast that was initially irregular in nature. However, the storm quickly intensified on May 18, strengthening into a severe cyclonic storm and later very severe cyclonic storm. During this time, the cyclone turned eastward under the influence of a ridge over India to the north.

Under the influence of an area of high pressure to the north and a nearby area of low pressure, Josephine began executing a cyclonic loop to the north while approaching Atlantic Canada. During the cyclonic loop, it transitioned into an extratropical cyclone on October 18\. Shortly thereafter, the remnants of Josephine merged with a broad mid-latitude trough. The remnants of Josephine tracked southward and completed the cyclonic loop on October 19\.

A depression formed in the Arabian Sea and soon intensified into a cyclonic storm and was named Hikaa. The system gradually intensified into a severe cyclonic storm and then reached its peak intensity as a very severe cyclonic storm with 90 mph 3-min sustained wind speeds. Hikaa weakened due to dry air intrusion and made landfall on Oman as a severe tropical cyclone. Hikaa quickly weakened after moving inland and later dissipated.

Maintaining a generally westward track thereafter, Vardah consolidated into a Severe Cyclonic Storm on December 9, before peaking as a Very Severe Cyclonic Storm, with 3-minute sustained winds of , and a minimum central pressure of , on December 11. Weakening into a Severe Cyclonic Storm, Vardah made landfall close to Chennai on the following day, and degenerated into remnant low on December 13. The name Vardah, suggested by Pakistan, refers to the red rose.

The deep depression initially moved to the northeast toward the west coast of India. Early on October 25, the IMD upgraded the system to a cyclonic storm, naming it Kyarr. Later that day, the storm turned northward and intensified further to a severe cyclonic storm.

The humidity is high throughout the year, and Lawachara experiences frequent rains with occasional cyclonic storms.

Roofs and walls inclined at 15 degrees balanced the cyclonic winds loads placed on the building.

The most recent super cyclonic storm was Cyclone Amphan in 2020 North Indian Ocean cyclone season.

Historically, a system has been classified as a depression if it is an area where the barometric pressure is low compared with its surroundings. Other classifications historically used include: cyclonic storm where the winds did not exceed force 10 on the Beaufort scale and a Cyclone where the winds are either force 11 and 12 on the Beaufort scale. Between 1924 and 1988, tropical cyclones were classified into four categories: depression, deep depression, cyclonic storms and severe cyclonic storms. However, a change was made during 1988 to introduce the category "severe cyclonic storm with core of hurricane winds" for tropical cyclones, with wind speeds of more than .

Positive vorticity advection, or PVA, is the result of more cyclonic values of vorticity advecting into lower values of vorticity. It is more generally referred to as "Cyclonic Vorticity Advection" (CVA). In the Northern Hemisphere this is positive, whilst in the Southern Hemisphere it is negative.

Of these nine, a total of four further strengthened into cyclonic storms, while two attained their peaks as extremely severe cyclonic storms. In early June, Cyclonic Storm Ashobaa produced significant flooding in eastern Oman and the United Arab Emirates. Later that month, Deep Depression ARB 02 resulted in the worst floods in the Amreli district of Gujarat in 90 years. The storm resulted in 80 deaths and an estimated 16.5 billion Indian rupees in damage in the state.

Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD. Overall, there was a total of 12 depressions, of which 7 became cyclonic storms, and 1 further strengthened to a very severe cyclonic storm. These totals were slightly above the long-term average of 5.4 cyclonic storms for the basin. In contrast to this, the JTWC reported record- breaking activity with 13 tropical cyclones, 11 of which became tropical storms.

However, there were reports of a cyclonic disturbance in the east Gulf of Mexico until August 29.

Whereas in the cyclonic eddy, the upwelling entrains deep cold water and forms a cold-core. Previous studies show the deepening effects of MLD under anticyclonic eddies and shoaling of MLD in cyclonic eddies.Klein, P., Treguier, A. M., & Hua, B. L. (1998). Three-dimensional stirring of thermohaline fronts.

The climate is tropical semi-desert. Rainfall averages 300 mm annually, typically from summer cyclonic storms and thunderstorms.

Two systems were prototyped and tested; a screw conveyor system and a novel cyclonic separator and vacuum system.

As a result, Severe Cyclonic Storms are currently estimated, to have 3-minute sustained wind speeds of between .

Tropical waves are a type of trough in easterly currents, a cyclonic northward deflection of the trade winds.

During high NAO/AO indexes the cyclonic wind field over the Arctic becomes very strong, this transports more ice out through Fram Strait and into the EGC. During low NAO/AO indexes the cyclonic wind field is quite small and thus the transport out of the Fram Strait diminishes greatly.

Severe Cyclonic Storm Helen was a relatively weak tropical cyclone that formed in the Bay of Bengal Region on 18 November 2013, from the remnants of Tropical Storm Podul. It was classified as Deep Depression BOB 06 by the IMD on 19 November. As it was moving on a very slow northwest direction on 20 November, it became Cyclonic Storm Helen as it brought light to heavy rainfall in eastern India. It then became a Severe Cyclonic Storm on the afternoon hours of 21 November.

Cyclonic Storm Laila (IMD designation: BOB 01, JTWC designation: 01B) was the first cyclonic storm to affect southeastern India in May since the 1990 Andhra Pradesh cyclone. The first tropical cyclone of the 2010 North Indian Ocean cyclone season, Laila developed on May 17 in the Bay of Bengal from a persistent area of convection. Strengthening as it tracked northwestward, it became a severe cyclonic storm on May 19. The next day, Laila made landfall in Andhra Pradesh, and it later dissipated over land.

On October 30, the storm began weakening as the track shifted to the west, falling to the intensity of a severe cyclonic storm. On the same day, Kyarr co-existed with Cyclonic Storm Maha, marking the first time on record that there were two simultaneous cyclonic storms in the Arabian Sea. Kyarr turned to the southwest, paralleling the coastline of the Arabian Peninsula offshore. On October 31, it weakened to a deep depression, and Kyarr deteriorated further to a depression on the next day.

Cyclonic rotation or circulation is movement in the same direction as the Earth's rotation, as opposed to anticyclonic rotation. The Coriolis effect causes cyclonic rotation to be in a counterclockwise direction in the northern hemisphere, and clockwise in the southern hemisphere. A closed area of winds rotating cyclonically is known as a cyclone.

The IMD further upgraded the depression into a deep depression the next day. JTWC reported the same day that a Tropical Storm had formed. On June 1, IMD upgraded the system into a cyclonic storm and named it "Phet". The storm intensified to a Severe Cyclonic Storm in early hours of June 2.

This was confirmed by the designation of Cyclonic Storm Sidr, the next name on the list after Yemyin, in November.

Satellite image of the 1999 Odisha cyclone nearing eastern India as one of the most intense tropical cyclones in North Indian Ocean Super cyclonic storm is the highest category used by the India Meteorological Department (IMD) to classify tropical cyclones, within the North Indian Ocean tropical cyclone basin between the Malay Peninsula and the Arabian Peninsula. Within the basin, a super cyclonic storm is defined as a tropical cyclone that has 3-minute mean maximum sustained wind speeds of at least . The category was formally introduced during the 1999 season alongside Very Severe Cyclonic Storms, in order to replace the previously used Severe Cyclonic Storm with Core of Hurricane Winds. There have been at least nine storms that have attained such an intensity.

Cyclonic Storm Nilam was the deadliest tropical cyclone to directly affect South India since Cyclone Jal in 2010. Originating from an area of low pressure over the Bay of Bengal on October 28, 2012, the system began as a weak depression 550 km (340 mi) northeast of Trincomalee, Sri Lanka. Over the following few days, the depression gradually intensified into a deep depression, and subsequently a cyclonic storm by October 30. It made landfall near Mahabalipuram on October 31 as a strong cyclonic storm with peak winds of 85 km/h (50 mph).

Under the influence of an upper air cyclonic circulation, a low pressure area formed over the Andaman Sea on October 6. The system drifted westward and intensified into a depression and subsequently into a deep depression the next day, followed by the Joint Typhoon Warning Center (JTWC) issuing a Tropical cyclone formation alert (TCFA). Owing to favorable environmental conditions, the storm intensified into a cyclonic storm on October 8 and was named Hudhud. Its convection consolidated in the following hours, and Hudhud became a Severe Cyclonic Storm on October 9.

Very Severe Cyclonic Storm Vardah was the fourth cyclonic storm, as well as the most intense tropical cyclone of the 2016 North Indian Ocean cyclone season. The system struck the Andaman and Nicobar Islands, as well as South India, before later affecting Somalia. Originating as a low pressure area near the Malay Peninsula on December 3, the storm was designated a depression on December 6. It gradually intensified into a Deep Depression on the following day, skirting off the Andaman and Nicobar Islands, and intensified into a Cyclonic Storm on December 8.

The north facing slopes receive heavy cyclonic rainfall from the Bay of Biscay, whereas the southern slopes are in rain shadow.

A Cyclonic Storm is a category used by the India Meteorological Department (IMD) to classify tropical cyclones, within the North Indian Ocean tropical cyclone basin between the Malay Peninsula and the Arabian Peninsula. Within the basin, a cyclonic storm is defined as a tropical cyclone that has 3-minute mean maximum sustained wind speeds of between .

A severe cyclonic storm developed in the Arabian Sea on June 21. The system struck western India before dissipating on June 26.

The final storm of the season, Severe Cyclonic Storm Thirteen, developed on December 9. It lasted four days, dissipating on December 13.

Then Cyclonic Storm Keila formed in November and came ashore in Oman, before Depression ARB03 formed and dissipated near the Oman coast.

During the first week of July an area of low pressure and several upper air cyclonic circulations caused the monsoon to advance further, where it covered the whole of Haryana, Madhya Pradesh, Punjab and Uttar Pradesh by July 7. Over the next two weeks a trough of low pressure and a cyclonic circulation, helped advance the monsoon into remaining parts of the Arabian Sea, central and north-western India. The India Meteorological Department (IMD) subsequently declared that the monsoon covered the whole of India on July 17, which was about two days later that normal. A change in the lower tropospheric circulation pattern over Rajasthan between September 16–17, from cyclonic to anti cyclonic, which indicated to forecasters that the southwest monsoon had started to withdraw from the region.

Cyclonic Storm Viyaru, operationally known as Cyclonic Storm Mahasen, was a relatively weak tropical cyclone that caused loss of life across six countries in Southern and Southeastern Asia. Originating from an area of low pressure over the southern Bay of Bengal in early May 2013, Viyaru slowly consolidated into a depression on May 10\. The depression gained forward momentum and attained gale-force winds on May 11 and was designated as Cyclonic Storm Viyaru, the first named storm of the season. Owing to adverse atmospheric conditions, the depression struggled to maintain organized convection as it moved closer to eastern India.

Very Severe Cyclonic Storm Vayu () was a strong tropical cyclone that caused moderate damage in India during June 2019. It was the strongest tropical cyclone to affect the Saurashtra Peninsula of northwestern India since the 1998 Gujarat cyclone. Vayu was the third tropical depression, third cyclonic storm and second very severe cyclonic storm of the 2019 North Indian Ocean cyclone season, and the first of which to form in the Arabian Sea. Vayu originated from a low-pressure area that was first noted by the India Meteorological Department (IMD) on 9 June, near the northern Maldives.

Multi-spectral satellite imagery revealed that Mekunu had developed an eye as early as May 23, at which time the IMD upgraded it to a severe cyclonic storm. Benefiting from favorable environmental conditions, the cyclone became more symmetric, intensifying into a very severe cyclonic storm six hours later. The cyclone continued to track northwestward under the influence of a subtropical ridge. On May 25, it reached its peak intensity as an extremely severe cyclonic storm, with the JTWC estimating peak 1-minute sustained winds of 185 km/h (115 mph), equivalent to a Category 3 storm on the Saffir-Simpson scale.

The circulation became better defined over time, steered generally west-northwestward by a subtropical ridge to its north. On October 9, the IMD upgraded Luban to a severe cyclonic storm, as the thunderstorms continued to bloom over the circulation. A day later, the IMD upgraded Luban further to a very severe cyclonic storm, with maximum sustained winds of at least 120 km/h (75 mph), equivalent to a hurricane. Luban coexisted with Very Severe Cyclonic Storm Titli, marking the first time since 1977 that two storms of such intensity were active at the same time in the North Indian Ocean.

Very Severe Cyclonic Storm Luban was the third tropical cyclone to affect the Arabian Peninsula during the 2018 North Indian Ocean cyclone season, after cyclones Sagar and Mekunu in May. Luban developed on October 6 in the central Arabian Sea, and for much of its duration, maintained a general west- northwestward trajectory. On October 10, the India Meteorological Department (IMD) upgraded Luban to a very severe cyclonic storm - equivalent to a Category 1 hurricane - and estimated maximum sustained winds of 140 km/h (85 mph). The storm made landfall on October 14 in eastern Yemen, as a cyclonic storm.

During February 28, the system became a Category 3 severe tropical cyclone on the Australian scale, as it performed a small clockwise loop, between the Shepherd Islands and Efate. After completing its first cyclonic loop during February 29, Bola started to move south-eastwards, before it performed a second cyclonic loop during the next day. As it completed its second cyclonic loop during March 2, the FMS reported that the system had peaked with 10-minute sustained wind speeds of 165 km/h (105 mph), which made it a Category 4 severe tropical cyclone on the Australian scale.

Figure 2 - Cyclonic spray scrubber Cyclonic spray scrubbers are more efficient than spray towers, but not as efficient as venturi scrubbers, in removing particulate from the inlet gas stream. Particulates larger than 5 μm are generally collected by impaction with 90% efficiency. In a simple spray tower, the velocity of the particulates in the gas stream is low: 0.6 to 1.5 m/s (2 to 5 ft/s). By introducing the inlet gas tangentially into the spray chamber, the cyclonic scrubber increases gas velocities (thus, particulate velocities) to approximately 60 to 180 m/s (200 to 600 ft/s).

Super Cyclonic Storm Kyarr was an extremely powerful tropical cyclone that became the first super cyclonic storm in the North Indian Ocean since Gonu in 2007. It was also the second strongest tropical cyclone in the Arabian Sea and one of the most intense tropical cyclones in North Indian Ocean history. The seventh depression, fifth named cyclone, and the first, and only super cyclonic storm of the annual season, Kyarr developed from a low-pressure system near the Equator. The system organized itself and intensified to a tropical storm on October 24 as it moved eastwards.

The system moved fast under the influence of mid-latitude trough in westerlies lying over India in the middle and upper tropospheric levels and the anti-cyclonic cyclonic circulation lying to the northeast of the system. Shortly before landfall, the storm reached its peak intensity as a severe cyclonic storm with winds of 110 km/h and a minimum central pressure off . The JTWC analyzed it having reached Category 1 hurricane strength on the same day, with winds of 120 km/h. At peak intensity, the storm made landfall on the southern coast of Bangladesh near Chittagong at 6:00 a.m. IST.

On , the Joint Typhoon Warning Center (JTWC) designated the system as Tropical Cyclone 05B. Early on November 6, the IMD upgraded Depression BOB 05 to a deep depression. Later, the deep depression strengthened further, prompting the IMD to upgrade it to a cyclonic storm, and was named "Jal". The storm continued to grow and became a severe cyclonic storm by .

A depression formed in the northern Bay of Bengal on May 14 and move northward. The depression slowly strengthened into a cyclonic storm On May 15. The storm reached its maximum intensity of 70 mph (113 km/h) before making landfall in Eastern Bangladesh on May 17 and dissipating thereafter. The effects from Cyclonic Storm One if any are unknown.

After developing, the system moved northwestward due to a ridge over India. The IMD upgraded the depression to Cyclonic Storm Agni late on November 29 and further to a severe cyclonic storm the next day. The JTWC also upgraded Agni to the equivalent of a minimal hurricane, estimating 120 km/h (75 mph). Wind shear and dry air caused the storm to weaken.

On December 10, RSMC New Delhi announced that Depression BOB 05 had formed, about 400 km east-southeast of Batticaloa, Sri Lanka. The next day it strengthened to become Cyclonic Storm Ward. After wandering some time to the east of Sri Lanka, the system made landfall near Trincomalee on December 14 as a Deep Depression. Cyclonic Storm Ward dissipated completely on December 16.

Throughout the day, the structure rapidly deteriorated as the storm curved to the west-northwest. At 21:00 UTC on November 9, Megh weakened further into a severe cyclonic storm, and degraded further to a cyclonic storm by six hours later. While just offshore Yemen, the circulation slowed and turned to the northeast, after the ridge to the north receded eastward.

Extremely Severe Cyclonic Storm Chapala was a powerful tropical cyclone that caused moderate damage in Somalia and Yemen during November 2015. Chapala was the third named storm of the 2015 North Indian Ocean cyclone season. It developed as a depression on 28 October off western India, and strengthened a day later into a cyclonic storm. Chapala then rapidly intensified amid favorable conditions.

The next morning, the deep depression strengthened further and was upgraded to a cyclonic storm and named "Laila" by the IMD. The storm continued to grow and became a severe cyclonic storm by May 19, it was given a Category 1 tropical cyclone status by the JTWC. Later the same day, it started weakening. On May 21, Laila dissipated completely.

Late on the same day, the IMD reported that the system had grown stronger than Cyclone Phet, becoming the most powerful storm of the season. According to the news, the cyclone made landfall late on October 22, at Kyaukphyu, Arakan, Myanmar. Late on October 22, Giri weakened into a Severe Cyclonic Storm. Early on October 23, Giri further weakened into a Cyclonic Storm.

That day, the Joint Typhoon Warning Center (JTWC) designated the system as Tropical Cyclone 05B. Early on November 5, the IMD upgraded Depression BOB 05 to a deep depression. Later, the deep depression strengthened further, prompting the IMD to upgrade it to a cyclonic storm, and was named "Jal." The storm continued to grow and became a severe cyclonic storm by November 6.

The negative vorticity advection area will be associated with convergence and downward motion. This produces convergence because of the way the air gains cyclonic vorticity while entering the base of the trough. The opposite happens when air is exiting the base of a trough. This air has more cyclonic vorticity than the air it is entering and therefore produces CVA.

This motion creates a 'bulge,' i.e., high sea surface height (SSH) in the center of the Anticyclonic eddies. In contrast, cyclonic eddies exhibit a low SSH in the center. The SSH in both anticyclonic and cyclonic decreases and increases, respectively, as the distance from the center increases.Gaube, P., Chelton, D. B., Samelson, R. M., Schlax, M. G., & O’Neill, L. W. (2015).

The three cyclonic storms was less than the average of 5.4, and the two severe cyclonic storms was slightly below the average of 2.5. In addition to the storms tracked by the IMD, a monsoon depression struck northern Oman in late July, producing heavy rainfall that totaled on Jebel Shams mountain. The system later affected the remainder of the Arabian Peninsula.

Aila became a severe cyclonic storm at 06UTC on May 25 and made landfall at its peak intensity (60kt, 967hPa) between 08 and 09UTC.

Throughout its life as a tropical cyclone, Andres moved very little and slowly executed a cyclonic loop, while remaining well away from any land.

The 1955 flood, in February, was the most severe in European history. This flood was due to extreme cyclonic weather conditions in northern Australia.

It turned to the southwest and later to the southeast, completing a large cyclonic loop before dissipating on September 24 to the south of Ireland.

A low pressure area developed into a tropical depression on September 19, while located about 245 mi (395 km) southeast of Awendaw, South Carolina. The system, which had an "extremely small diameter", moved in a slow cyclonic loop. Around 1200 UTC on September 20, the depression strengthened into a tropical storm. By midday on September 22, it continued the cyclonic loop while moving northwestward.

That day, the Joint Typhoon Warning Center (JTWC) designated the system as Tropical Cyclone 04B. Later, the deep depression strengthened further and was upgraded to a cyclonic storm and named "Giri" by the IMD. Early on October 22, the IMD upgraded the storm to a Very Severe Cyclonic Storm. The cyclone had intensified to a Category 4 tropical cyclone on the SSHS according to the JTWC.

In late July and early August, Cyclonic Storm Komen resulted in between 187–280 deaths in northeastern India, Bangladesh and Myanmar due to torrential rains as it slowly moved through the region. In early November, Extremely Severe Cyclonic Storm Chapala, the strongest storm of the season, became the first recorded tropical cyclone to produce hurricane-force winds in Yemen. During the storm's passage, areas in southern Yemen received of rainfall over 48 hours, or 700% of the average yearly precipitation. Just days after Chapala produced widespread damage in Yemen and the Puntland region of Somalia, Extremely Severe Cyclonic Storm Megh passed through the same region causing further destruction.

Six hours later, the JTWC assessed one-minute sustained winds as having reached 65 km/h (40 mph), and designated the system as Tropical Cyclone 02A. At 18:00 UTC on 10 June, the system strengthened into the third cyclonic storm of the season, and was named Vayu by the IMD. Vayu continued to steadily strengthen after intensifying into a cyclonic storm. A formative eye began to develop on 11 June, as intense deep convection wrapped tightly around the system. Vayu became a severe cyclonic storm by 12:00 UTC, and reached Category 1 tropical cyclone status on the Saffir–Simpson hurricane wind scale (SSHWS).

On July 19, an upper level cyclonic circulation lay over the north-eastern Bay of Bengal and parts of Gangetic West Bengal and Odisha. Over the next day an area of low pressure formed, under the influence of this cyclonic circulation and rapidly concentrated into a Depression during July 21, over Odisha and West Bengal. Over the next couple of days the system moved westwards, before it weakened into an area of low pressure during July 23 over northwest Madhya Pradesh. The area of low pressure subsequently merged with the monsoon during July 25, while the cyclonic circulation persisted over Rajasthan and Punjab, before it was last noted during July 31.

This included record activity in the months of October and November, each having three storms, while July saw its first system on record. The first storm of the year was Cyclonic Storm BOB 01 which formed on May 16 while the last was Deep Depression ARB 04 which dissipated over Somalia on December 24\. The most intense was Very Severe Cyclonic Storm Forrest, which attained peak three-minute sustained winds of 185 km/h (115 mph). Severe Cyclonic Storm BOB 07 proved to be the deadliest and most destructive of the year, claiming 263–423 lives across southern India and leaving $69 million in damage.

The IMD later reported that the deep depression made its first landfall over Long Island, Andaman, and had reached cyclonic storm intensity, naming it Hudhud. After entering the Bay of Bengal, Hudhud continued to intensify the following day, and was upgraded to a severe cyclonic storm. Early on October 10, the JTWC classified the storm as a Category 1 tropical cyclone after it formed a microwave eye feature and was located in an environment favorable for further intensification with moderate wind shear. The IMD upgraded Hudhud to a very severe cyclonic storm later the same day, and the JTWC further upgraded the storm to a Category 2 tropical cyclone.

Due to decreasing wind shear and warm, moist air, the system quickly intensified on September 23, prompting the IMD to upgrade the system to Cyclonic Storm Hikaa; later that day the agency upgraded the storm further to a severe cyclonic storm. During the strengthening phase, an eye feature formed in the center of the convection, indicative of strengthening. Considering the storm a "midget tropical cyclone", the JTWC upgraded Hikaa to the equivalent of hurricane status late on September 23, while the storm was approaching eastern Oman. The IMD followed suit, upgrading Hikaa to a very severe cyclonic storm on September 24, estimating peak winds of 140 km/h (85 mph).

During the next day, the Depression turned towards the northeast the IMD reported that it had intensified into a Cyclonic Storm and named it as Phyan.

Though not directly related to Morakot, the storm's cyclonic circulation helped in part to produce thick smog and low visibility conditions in parts of Hong Kong.

Transcribing a cyclonic loop, Lex continued to intensify and was a typhoon by October 25.Joint Typhoon Warning Center. Typhoon Lex. Retrieved on 2007-01-06.

On November 11, a severe cyclonic storm - numbered BOB 04 - developed in the Bay of Bengal. It soon became the strongest tropical cyclone with maximum sustained winds of 100 km/h (65 mph) and a minimum barometric pressure of . BOB 04 made landfall in Bangladesh on November 12, hours before dissipating. Later in November, another cyclonic storm - assigned to BOB 05 - formed in the Bay of Bengal on November 23\.

Convection organized around the center, signaling intensification. On November 16, the IMD upgraded the depression to a deep depression, and later cyclonic storm. The storm fluctuated in intensity until November 18, when a more pronounced strengthening trend began. A day later, the IMD upgraded the storm to a very severe cyclonic storm, estimating 3 minute winds of 120 km/h (75 mph), based on a Dvorak rating of 4.0.

The intense low made a cyclonic loop west of Iceland, before being absorbed by another strengthening extratropical cyclone to the west of Great Britain, late on December 1.

Lingering low pressure and broad cyclonic flow over the north-central Caribbean in Nicole's wake contributed to the development of Hurricane Paula in the first weeks of October.

The Philippines sit astride typhoon belt and are usually affected by 15 and struck by five to six cyclonic storms per year; landslides; active volcanoes; destructive earthquakes; tsunamis.

The lowest night temperature could be . The Caribbean sea waters in the vicinity generally maintain a temperature of about . The archipelago faces frequent catastrophic threats of cyclonic storms.

The North Indian Ocean tropical cyclone basin is located to the north of the Equator, and encompasses the Bay of Bengal and the Arabian Sea, between the Malay Peninsula and the Arabian Peninsula. The basin is officially monitored by the India Meteorological Department's Regional Specialized Meteorological Centre in New Delhi, however, other national meteorological services such as the Bangladesh and Pakistan Meteorological Department's also monitor the basin. The Very Severe Cyclonic Storm category was introduced during 1999 alongside Super Cyclonic Storms in order, to replace the previously used Severe Cyclonic Storm with Core of Hurricane Winds. At the time it was the second-highest category with systems having 3-minute sustained wind speeds of between .

Skirting off the Andaman and Nicobar Islands as a Deep Depression, BOB 06 was upgraded to a Cyclonic Storm by the IMD and JTWC, in the early hours of December 8, and was assigned the name Vardah. With conditions favorable for further development, Vardah intensified into a Severe Cyclonic Storm on December 9. Although predicted to maintain its intensity, Vardah strengthened further, as it followed a generally west-northwestwards track, prompting the IMD to upgrade its intensity to Very Severe Cyclonic Storm status, on December 10. Gradually intensifying as it moved westward, Vardah reached its peak intensity on December 11, with maximum 3-minute sustained winds of 130 km/h (80 mph), and a minimum central pressure of .

The 1990 Andhra Pradesh cyclone or the 1990 Machilipatnam Cyclone was the worst disaster to affect Southern India since the 1977 Andhra Pradesh cyclone. The system was first noted as a depression on 4 May 1990, while it was located over the Bay of Bengal about to the southeast of Chennai, India. During the next day the depression intensified into a cyclonic storm and started to intensify rapidly, becoming a super cyclonic storm early on 8 May. The cyclone weakened slightly before it made landfall on India about 300 km (190 mi) to the north of Madras in the Andhra Pradesh state as a very severe cyclonic storm with winds of 165 km/h (105 mph).

There have been at least eight storms that have attained such an intensity. The most recent super cyclonic storm was Cyclone Kyarr in 2019 North Indian Ocean cyclone season.

Dyson is a British-based company and manufacturer of bagless vacuum cleaners (using cyclonic separation and brushless electric motors), heatless hand dryers, bladeless fans/heaters, and robotic vacuum cleaners.

Tropical Depression Thirteen formed on October 12. It first headed southwest, then west, and performed a cyclonic loop. It headed north before sharply recurving. It dissipated on October 18.

Cyclone Gonu set several intensity records. When it became a very severe cyclonic storm on June 3, Gonu became the strongest tropical cyclone on record in the Arabian Sea. It was the only super cyclonic storm, which is a tropical cyclone with 3-minute sustained winds of at least 240 km/h (150 mph), in the region, until Cyclone Kyarr 12 years later. The JTWC estimated peak winds of 270 km/h (165 mph).

Intensification was also aided by increased upper-level divergence or the increased upward movement of air. At 09:00 UTC on November 8, the IMD upgraded the system to a severe cyclonic storm, and six hours later to a very severe cyclonic storm. By that time, an eye had developed, described by the IMD as a "banding-type eye". As such, the agency estimated peak 3 minutes sustained winds of 120 km/h (75 mph).

At around the same time the IMD reported that the cyclone had peaked as a Super Cyclonic Storm with 3-minute sustained wind speeds of 235 km/h (145 mph). The system subsequently started to weaken and had become a very severe cyclonic storm, by the time it made landfall in southern Andhra Pradesh during May 9. The system subsequently moved north-westwards and gradually weakened further, before it was last noted during May 11.

Thereafter, the storm executed a cyclonic loop, which lasted until September 30. It curved northeastward on October 1 and was last noted at 0600 UTC, while located about northeast of Bermuda.

Cyclonic Storm One developed in the Bay of Bengal on May 6. It moved east-northeastward and eventually curved northeastward. The system made landfall in Burma before dissipating on May 9.

Nine people were killed in rain related incidents in Tamil Nadu, as the cyclonic storm "Laila" battered the Coastal areas in Northern parts of Tamil Nadu, Chennai city and its suburbs.

Skirting off the Andaman and Nicobar Islands as a deep depression, BOB 06 was upgraded to a cyclonic storm by the IMD and JTWC, in the early hours of 8 December, and was assigned the name Vardah by the IMD. With conditions favorable for further development, Vardah intensified into a severe cyclonic storm on 9 December. Although predicted to maintain its intensity, Vardah strengthened further, as it followed a generally west-northwestward track, prompting the IMD to upgrade its intensity to very severe cyclonic storm status, on 10 December. Gradually intensifying as it moved westward, Vardah reached its peak intensity on 11 December, with maximum 3-minute sustained winds of 130 km/h (80 mph), and a minimum central pressure of .

Both the IMD and the JTWC anticipated steady intensification, due to decreasing wind shear. On May 22, the IMD upgraded the depression to a deep depression, and later a cyclonic storm, naming it Mekunu. An eye feature developed in the center of the storm on May 23, indicative of an intensifying storm. That day, the IMD upgraded Mekunu to a Very Severe Cyclonic Storm – the equivalent of a minimal hurricane – while the storm passing east of Socotra.

Post-monsoon cyclonic storms in the coastal region produce additional rain during September and October. The winter northeast monsoon, which provides rain between December and March, provides little rain to the upper basin and slightly more to the lower basin. It varies greatly from year to year in south India, sometimes bringing powerful cyclonic storms with flooding and high winds. The mean annual rainfall is 550 mm/year in Anantapur, and 900 mm/year in Nellore.

On June 6, the cyclone turned to the north-northwest, and later that day the JTWC downgraded Gonu to tropical storm status. The IMD followed suit by downgrading Gonu to severe cyclonic storm status, and later to cyclonic storm status early on June 7. Gonu crossed the Makran coast in Iran six hours later, and the IMD stopped issuing advisories on the cyclone. This made it the first tropical cyclone on record to hit the country since 1898.

In the mid-levels (mid-troposphere), the MCC exhibits a cyclonic (counterclockwise in the Northern Hemisphere) rotating low pressure which is warm compared to the surrounding environment (referred to as a warm core). This mid-level circulation is referred to as a Mesoscale Convective Vortex. The upper-levels contain an anti-cyclonic (clockwise in the Northern Hemisphere) rotating high pressure which is a sign of divergence of air. This high pressure is colder relative to its surrounding environment.

For storms, these are abbreviated as BOB and ARB by the IMD. So far this season there have been four depressions that have formed; three in the Bay of Bengal and one in the Arabian Sea. Three of the depressions have intensified further with two becoming cyclonic storms with the names Bijli and Aila being assigned to them, whilst the other depression became a Deep Depression. Aila intensified further and peaked as a Severe Cyclonic Storm.

A partially demolished factory with dominating Cyclonic Separators Cyclonic separation is a method of removing particulates from an air, gas or liquid stream, without the use of filters, through vortex separation. When removing particulate matter from liquid, a hydrocyclone is used; while from gas, a gas cyclone is used. Rotational effects and gravity are used to separate mixtures of solids and fluids. The method can also be used to separate fine droplets of liquid from a gaseous stream.

Western boundary currents resulted in an anti-cyclonic subtropical North Panthalassa gyre at mid-latitudes and a meridional anti-cyclonic circulation centred on 20°N. In tropical northern Panthalassa trade winds created westward flows while equatorward flows were created by westerlies at higher latitudes. Consequently, trade winds moved water away from Gondwana towards Laurasia in the northern Panthalassa Equatorial Current. When the western margins of Panthalassa were reached intense western boundary currents would form the Eastern Laurasia Current.

Four deep depressions strengthened further into a cyclonic storm, which has sustained winds of at least 65 km/h (40 mph). Two storms during the season became a very severe cyclonic storm, which is the equivalent of hurricane status, with winds of at least 120 km/h (75 mph). During the season, the American-based Joint Typhoon Warning Center (JTWC) issued warnings for five of the tropical cyclones, which is the same as the long term average.

Cyclonic Storm Roanu was a relatively weak tropical cyclone that caused severe flooding in Sri Lanka and Bangladesh during May 2016\. It is the first tropical cyclone of the annual cyclone season. Roanu originated from a low pressure area that formed south of Sri Lanka, which gradually drifted north and intensified into a cyclonic storm on 19 May. However, wind shear and land interaction caused it to weaken slightly, before reintensifying as it accelerated towards the coast of Bangladesh.

Severe Cyclonic Storm Fourteen developed in the Bay of Bengal on November 3. Initially heading northwestward, the storm eventually curved westward. Shortly before dissipating on November 8, the storm struck southern India.

Severe Cyclonic Storm Twelve developed on November 26. It was the strongest tropical cyclone of the season, peaked with winds of 140 km/h (85 mph). The system dissipated on November 29.

Heat lows normally are stationary and have a weak cyclonic circulation.National Weather Service Forecast Office Columbia, South Carolina (2009). Weather Terms. National Weather Service Eastern Region Headquarters. Retrieved on 2009-03-08.

Cyclogenesis is the development and strengthening of cyclonic circulations, or low-pressure areas, within the atmosphere.Arctic Climatology and Meteorology (2009). Cyclogenesis. National Snow and Ice Data Center. Retrieved on 2009-02-21.

The bridge is designed to run trains at a speed of per hour and is designed to withstand wind speed of per hour during cyclonic storms that are anticipated in and around Rajahmundry.

After a period of inactivity during the monsoon season, there were cyclonic storms in September and October in the northern Arabian Sea. Both lasted only a few days and dissipated due to unfavorable wind shear. Another cyclonic storm formed in the Bay of Bengal and struck Andhra Pradesh, which dropped heavy rainfall that was equivalent to 300% of the average October precipitation total. The rains caused flooding, particularly in Cuddapah, where a dam was deliberately opened and inundated the town overnight.

Soon after, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert (TCFA). At 00:00 UTC on November 11, the deep depression strengthened into a cyclonic storm, and was given the name Gaja by the IMD. After tracking west- southwestward for a number of days, it made landfall near Nagapattinam in southern India, early on November 16 as a Very severe cyclonic storm. Afterward, Gaja passed through Vedaranyam, Voimedu, Muthupet, Pattukotai, Adirampattinam, and Mallipattinam, on the same day.

By October 17, Josephine weakened back to a tropical storm, shortly before beginning to execute a cyclonic loop to the south of Newfoundland. While executing the cyclonic loop, Josephine became extratropical on October 18\. Although Josephine remained well offshore of the eastern United States, the effects from the storm and an area of high pressure produced strong winds and high seas along the coast. In North Carolina, high tides caused severe beach erosion and minor damage to ocean-front houses.

The cyclone formed over the SE Bay of Bengal as a depression near 10.0°N and 89.0°E on 27 October, intensified into a cyclonic storm near 15.0°N and 89.0°E on 30 October and subsequently intensified into a severe cyclonic storm with a core of hurricane winds. The cyclone moved north up to the North Bay and then NNE. On 31 October, the cyclone made landfall on Backerganj. The maximum wind speed was estimated at and the surge height was .

From its genesis, the storm moved northwestward, and early forecasts from the JTWC anticipated that trajectory would continue toward Andhra Pradesh in southeastern India, due to a westward-moving ridge over India. The cyclone gradually strengthened, amplified by a wind surge from the south. The IMD upgraded the depression to a cyclonic storm on April 25, and to a severe cyclonic storm on the following day. By April 26, wind shear had decreased to near zero as an anticyclone developed aloft the hurricane.

As the gas swirls around the chamber, pollutants are removed when they impact on liquid droplets, are thrown to the walls, and washed back down and out. Cyclonic scrubbers are generally low- to medium-energy devices, with pressure drops of 4 to 25 cm (1.5 to 10 in) of water. Commercially available designs include the irrigated cyclone scrubber and the cyclonic spray scrubber. In the irrigated cyclone (Figure 1), the inlet gas enters near the top of the scrubber into the water sprays.

Severe Cyclonic Storm Nisarga was the strongest tropical cyclone to strike the Indian state Maharashtra in the month of June since 1891. It was also the first cyclone to impact Mumbai since Cyclone Phyan of 2009. The third depression and second named cyclone of the annual cyclone season, Nisarga originated as a depression in the Arabian Sea and moved generally northward. On 2 June, the India Meteorological Department (IMD) upgraded the system to a cyclonic storm, assigning the name Nisarga.

Yemyin means Hippo in Myanmar. The PMD referred to the deep depression as Tropical Cyclone Yemyin, the next name on the list at the time. The IMD, the official Regional Specialized Meteorological Centre for the North Indian Ocean, did not operationally upgrade or name the system due to intense Indo-Pakistani relations. However, on August 6, the IMD reassessed the deep depression to have reached cyclonic storm strength, and retroactively designated the system as Cyclonic Storm Yemyin in its mid-season review.

Very Severe Cyclonic Storm Vayu during its first approach As the system intensified into a deep depression, the IMD issued a pre-cyclone watch for the coastline of the state of Gujarat. The agency indicated that further strengthening into a cyclonic storm within the following 24 hours was very likely. Fishermen were warned not to venture into the Arabian Sea near the developing system or in the forecast path of the cyclone, and mariners already at sea were urged to return to the coast. The pre-watch for the Gujarat coastline was upgraded to a yellow cyclone alert at 12:00 UTC on 10 June, with forecasts predicting landfall as a very severe cyclonic storm on 12 June. This was further upgraded to an orange alert on 11 June.

Like most other miniaturised frogs from Madagascar, Anodonthyla eximia is terrestrial. According to the original description, the only known specimen was collected after cyclonic rains. Males emit high-pitched whistling calls from the leaf litter.

Red Crescent volunteers and medical units were on alert as government offices in coastal zones closed. A meteorological office issued a warning for Chittagong and Cox’s Bazar as the cyclonic storm Mora headed towards Bangladesh.

Total economic losses in Vietnam were amounted to be US$10 million. The remnant energy of Tropical Storm Kirogi eventually contributed to the formation of Very Severe Cyclonic Storm Ockhi in the North Indian Ocean.

Cyclonic cold-core eddy in the eastern North Atlantic. I. Physical description. Marine Ecology Process Series, Vol. 39; 145-152. Due to the turbulent nature of the earth’s oceans, eddies can be found almost everywhere.

On August 7, a cyclonic storm formed in the northern Bay of Bengal. It moved ashore Odisha the next day, and progressed northwestward through India. It was last observed on August 10 over western India.

Tropical Cyclone 03B developed as a depression near Chennai, India on November 10\. Later that day, it intensified into a deep depression while tracking northward. As the storm was moving to the northeast, it was upgraded to a cyclonic storm, due to gale force winds. The cyclone came under the influence of mid-latitude trough, which caused the storm to accelerate to the north-northeast. Early on November 12, it was upgraded to a severe cyclonic storm, as maximum sustained winds reached 100 km/h (65 mph).

On the same day, the IMD began classifying it as a depression, but soon after upgraded it to a deep depression and later cyclonic storm after increased organization. The storm meandered off southwest India for three days due to weak steering currents. During that time, the convection pulsed around the circulation, and the IMD upgraded it to a severe cyclonic storm on May 7 with winds of 100 km/h (55 mph). By contrast, the JTWC only estimated peak winds of 85 km/h (50 mph).

Within nine hours, the depression further intensified into a deep depression. Around the same time, the system was classified as Tropical Cyclone 01B by the Joint Typhoon Warning Center. With warm sea surface temperatures, a formidable anticyclone aloft, and low wind shear, the system continued to mature as it tracked northwestward. Early on May 11, the deep depression strengthened into a cyclonic storm – marked by maximum sustained winds of at least 65 km/h (40 mph) – and later in the day into a severe cyclonic storm.

Between October 28 and October 29, the storm executed a cyclonic loop just offshore Louisiana. Shortly before 1200 UTC on that day, Juan made landfall near Morgan City, Louisiana as a minimal hurricane. It quickly weakened back to a tropical storm. The storm began to execute another cyclonic loop, reaching the Lafayette area before curving back out to the Gulf of Mexico on October 30\. The storm briefly remained offshore, before a second landfall on the Mississippi River Delta in Louisiana early on October 31\.

Louvers may be used as a type of flood opening, usually covered by one or more moving flaps. They are designed to allow floodwaters to enter and leave the building, equalizing hydrostatic pressure on the walls and mitigating structural damage due to flooding. Louver windows are a staple in the design of homes and perfect to withstand the pressures of future cyclonic conditions. Cyclone homes have always been synonymous with louver windows, louver blades have been tested for ‘debris type B’ for cyclonic regions.

Cyclonic Storm Rashmi (IMD designation: BOB 05, JTWC designation: 04B) was the seventh tropical cyclone of the 2008 North Indian Ocean cyclone season and second cyclonic storm, as well as the fifth tropical cyclone in the Bay of Bengal that year. A fairly weak tropical cyclone, it caused some notable damage in Bangladesh and India. An area of low pressure formed within the Bay of Bengal on October 24. It was designated as Depression BOB 05 the next day by the India Meteorological Department.

An anticyclonic tornado is a tornado which rotates in a clockwise direction in the Northern Hemisphere and a counterclockwise direction in the Southern Hemisphere. The term is a naming convention denoting the anomaly from normal rotation which is cyclonic in upwards of 98 percent of tornadoes. Many anticyclonic tornadoes are smaller and weaker than cyclonic tornadoes, forming from a different process, as either companion/satellite tornadoes or nonmesocyclonic tornadoes. An anticyclonic tornado near Big Spring, Texas on May 22, 2016 captured by storm chaser Aaron Jayjack.

It is endemic to the arid Pilbara region of Australia. It is a burrowing frog and is found in rocky gorges and creeks in the Pilbara following cyclonic rains. The species name saxatilis means "rock-dwelling".

The western disturbances which creates an upper air cyclonic circulation over Jammu and Kashmir caused rainfall in Chandigarh, which was recorded by India Meteorological Department as the heaviest rainfall in Chandigarh in the last 22 years.

During 1999 the categories Very Severe Cyclonic Storm and Super Cyclonic Storm were introduced, while the severe cyclonic storm with a core of hurricane winds category was eliminated. During 2015 another modification to the intensity scale took place, with the IMD calling a system with 3-minute maximum sustained wind speeds between 90–119 kn (166–221 km/h, 104–137 mph): an extremely severe cyclonic storm. The United States Joint Typhoon Warning Center also monitors the basin, and issues warnings on significant tropical cyclones on behalf of the United States Government, also assigning them TC numbers as in all other basins above (albeit in an unofficial manner for this and subsequent basins; cyclones originating in the Arabian Sea are assigned suffix "A" while those in the Bay of Bengal get suffix "B"). These warnings use a 1-minute sustained wind speed and can be compared to the Saffir–Simpson hurricane wind scale, however, regardless of intensity in this basin the JTWC labels all systems as tropical cyclones with TC numbers (optionally appended with international names or placeholders in parentheses, as done for typhoons above).

After being upgraded by the IMD to a severe cyclonic storm on June 11, and concurrently by the JTWC to a Category 1 tropical cyclone on the Saffir–Simpson hurricane wind scale (SSHWS), the system began a period of rapid intensification. Vayu strengthened into a very severe cyclonic storm soon afterward, and became a Category 2-equivalent very severe cyclonic storm on June 12. On June 13, the influence of a strengthening subtropical ridge over Saudi Arabia caused Vayu to gradually slow down and turn to the west, as it approached the coastline of the state of Gujarat in northwestern India. Later that day, at 06:00 UTC, Vayu reached its peak intensity as a very severe tropical cyclone, with three-minute sustained winds of 150 km/h (90 km/h) and a minimum pressure of .

Over the following 24 hours, the depression executed a small cyclonic loop over southern Texas. On June 26, the depression accelerated to the north-northeast, and eventually dissipated over northern Illinois on June 29 at 0000 UTC.

Cs depict cyclonic flow or likely areas of low pressure, while As depict anticyclonic flow or likely positions of high-pressure areas. An area of confluent streamlines shows the location of shearlines within the tropics and subtropics.

On 10 September Flamingo contested the St Leger Stakes over fourteen and a half furlongs at Doncaster Racecourse. Racing on unusually firm ground he came home fourth of the thirteen runners behind Fairway, Palais Royal and Cyclonic.

The transition from anticyclonic to cyclonic rotation of this gyre changes the origin of the waters fueling it; when the circulation is anticyclonic (most common), the waters of the gyre originate from the Adriatic Sea. When the circulation is cyclonic, the waters originate from the Levantine Sea. These waters have different physical and chemical characteristics, and the periodic inversion of the North Ionian Gyre (called Bimodal Oscillating System or BiOS) changes the Mediterranean circulation and biogeochemistry around the Adriatic and Levantine regions.Civitarese, G., Gacic, M., Lipizer, M., and Borzelli, G. L. E. (2010).

Moving slowly northwestwards, the system further deepened into a cyclonic storm on October 9\. Several ships in the path of the storm recorded gale-force winds, depicting its strengthening. Early on October 10, it became a severe cyclonic storm and soon reached its peak intensity with winds of 110 km/h (70 mph). Its central pressure at this time was estimated to be 986 mbar (hPa; 29.12 inHg). The National Oceanic and Atmospheric Administration (NOAA) estimated that the storm attained one-minute sustained winds of 155 km/h (100 mph).

Under the influence of the ongoing onset of the southwest monsoon, a trough of low pressure developed over the Arabian Sea off the coast of Karnataka on June 6. It slowly moved northwards, and consolidated into a depression by the morning of June 9. The next morning, while the storm was moving northwestwards, the India Meteorological Department upgraded it to a Cyclonic Storm. Over the following days the storm intensified further into a very severe cyclonic storm, recurved northeastwards and crossed the coast of Gujarat near Naliya at a peak intensity of .

The IMD upgraded the system to a deep depression and later cyclonic storm on December 13, and further to a severe cyclonic storm a day later. The agency estimated peak winds of 100 km/h (65 mph), noting spiral convection organizing around the beginnings of an eye feature. The storm also developed well-defined outflow due to an approaching trough from the west. At around 14:30 UTC on December 15, the storm made landfall near False Divi Point in southeastern India, along the coast of Andhra Pradesh.

Early on May 14, the IMD downgraded the storm to a severe cyclonic storm. Around this time, steering currents slackened, and the cyclone meandered northward over the central Bay of Bengal. By late on May 14, convection had largely dissipated, with the exception of a small area near the center, and the system weakened to minimal cyclonic storm status. Thunderstorm activity continued to wax and wane as the storm turned to the southeastward, though persistent hostile conditions caused the storm to weaken further to a deep depression on May 16\.

Cyclonic Storm Komen was an unusual tropical cyclone that originated near the southern coast of Bangladesh and later struck the same country while drifting over the northern Bay of Bengal. The second named storm of the 2015 season, Komen brought several days of heavy rainfall to Myanmar, Bangladesh, and India. It formed as a depression on July 26 over the Ganges delta and moved in a circular motion around the northern Bay of Bengal. Komen intensified into a 75 km/h (45 mph) cyclonic storm and moved ashore southeastern Bangladesh on July 30\.

An eye became evident during a Tropical Rainfall Measuring Mission (TRMM) pass of the storm; its appearance and the development of rainbands showed Phet was intensifying. Late on June 1, the JTWC upgraded the storm to the equivalent of a minimal hurricane, estimating 1 minute maximum sustained winds of 120 km/h (75 mph), after the eye became better defined and the tightly-curved thunderstorm activity. The IMD upgraded Phet to severe cyclonic storm status at 00:00 UTC on June 2, and further to a very severe cyclonic storm six hours later.

In the early hours of October 9 the JTWC upgraded the storm to a tropical cyclone. The same day, the IMD upgraded the storm to a deep depression, and subsequently a cyclonic storm, naming it Phailin. Rapid intensification ensued, and Phailin strengthened into a Very Severe Cyclonic storm on October 10, followed by the JTWC upgrading the storm to a strong Category 4 status. Continuing its rapid intensification, the storm reached Category 5 status the following day, the first storm to do so in the North Indian Ocean since Cyclone Sidr in 2007.

Originally a tropical storm that formed over the South China Sea on January 1, Pabuk entered the Gulf of Thailand. Shortly afterward, Pabuk made landfall over southern Thailand on January 4 and crossed into the Andaman Sea. The IMD then initiated advisories on the storm, making Pabuk the earliest-forming cyclonic storm for this basin, surpassing Hibaru in 2005, as well as the first cyclonic storm with a name originally assigned by RSMC Tokyo. Over the next few days, Pabuk continued moving west- northwestward, before weakening into a well-marked low on January 7.

The pressure decreased to , three-minute sustained winds increased to 215 km/h (135 mph), and one-minute sustained winds to 250 km/h (155 mph), making the system the equivalent of a high-end Category 4 major hurricane. On May 3, at 02:30 UTC (8:00 a.m. IST) Fani made landfall on Puri, in Odisha, weakening to a Category 1-equivalent very severe cyclonic storm soon after landfall, subsequently weakening to a cyclonic storm several hours later. On May 4, Fani weakened into a deep depression and moved into Bangladesh.

That morning, landslide and flooding warnings were hoisted for parts of eastern Sri Lanka and the Indian state of Kerala were given expectations of torrential rainfall in the coming days. By 09:00 UTC on May 17, Amphan had intensified into a very severe cyclonic storm. Within 12 hours, the storm had developed an eye and started to rapidly intensify, becoming an extremely severe cyclonic storm. According to the JTWC, it explosively intensified from a Category 1-equivalent cyclone to a Category 4-equivalent cyclone in just 6 hours.

The following morning around 10:30 UTC, the IMD upgraded Amphan to a super cyclonic storm with 3-minute sustained winds of 240 km/h (150 mph) and a minimum pressure of 920 hPa (27.46 inHg). This marked the second year in a row featuring a super cyclonic storm, the previous year seeing Kyarr in the Arabian Sea. On May 20, at approximately 17:30 IST, the cyclone made landfall near Bakkhali, West Bengal after weakening subsequently. It rapidly weakened once inland, and dissipated on the next day.

The 2014 North Indian Ocean cyclone season was an event in the annual cycle of tropical cyclone formation. The season included two very severe cyclonic storms, both in October, and one other named cyclonic storm, classified according to the tropical cyclone intensity scale of the India Meteorological Department. Cyclone Hudhud is estimated to have caused US$3.58 billion in damage across eastern India, and more than 120 deaths. The scope of this article is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula.

This made it the first super cyclonic storm in the Arabian Sea on record. After the storm maintained peak winds for about six hours, the IMD downgraded Gonu to very severe cyclonic storm status late on June 4. Gonu's eye became cloud-filled and ragged, and the cyclone gradually weakened due to cooler water temperatures and drier air as it approached the Arabian Peninsula. Due to land interaction with Oman, the inner core of deep convection rapidly weakened, and over a period of 24 hours the intensity decreased by 95 km/h (60 mph).

With low wind shear, as well as record-warm water temperatures, Chapala began a 33-hour period of rapid deepening, in which the barometric pressure dropped 59 hPa (1.74 inHg). The storm developed well-defined rainbands and thunderstorms that consolidated into an eye feature. The JTWC estimated Chapala attained hurricane-force winds of 120 km/h (75 mph) at 12:00 UTC on 29 October. Meanwhile, the IMD upgraded Chapala to a severe cyclonic storm at 09:00 UTC that day, and further to a very severe cyclonic storm at 18:00 UTC.

After the cyclone passed Socotra, its convective core became better-defined due to improved outflow. Chapala entered the Gulf of Aden on 2 November, becoming the strongest tropical cyclone on record in that region. At 12:00 UTC that day, the IMD downgraded the system to a very severe cyclonic storm, after Chapala had been an extremely severe cyclonic storm for 78 hours. The structure became disorganized due to increased easterly wind shear and interaction with the Arabian Peninsula to the north, allowing cooler and drier air to enter the circulation.

Three systems intensified into a cyclonic storm, which have sustained winds of at least 63 km/h (39 mph), at which point the IMD named them. The first official storm of the season was Cyclonic Storm Hibaru, which formed southeast of Sri Lanka in January. After nearly five months of inactivity, two depressions formed toward the end of June on opposite sides of India. The depression in the Arabian Sea was one of only two in that body of water during the year, the other of which formed in September and killed 13 people.

Early on December 17, the IMD reported that the system had peaked as a Severe Cyclonic Storm with 3-minute wind speeds of 100 km/h (65 mph). The system subsequently started to weaken later that day, as it encountered increasing upper-level wind shear associated with the mid-latitude westerlies. During the next day the system weakened into a Cyclonic Storm, before it degenerated into a depression. The system subsequently made landfall on Bangladesh near Cox's Bazar, before it was last noted over Myanmar by the JTWC during December 19.

A low pressure area formed over the western Bay of Bengal on October 28\. On the next day, the IMD classified it as a depression, and soon upgraded it to a deep depression. On October 30, the IMD upgraded it further to a cyclonic storm and later a severe cyclonic storm, estimating peak 3-minute winds of 110 km/h (70 mph); this was based on the appearance of a well-defined eye. Also on October 30, the JTWC initiated advisories on the system as Tropical Cyclone 04B north of Sri Lanka.

A supercell is characterized by a mesocyclone, which is usually first observed in velocity data as a tight, cyclonic structure in the middle levels of the thunderstorm. If it meets certain requirements of strength, duration, and vorticity, it may trip the mesocyclone detection algorithm (MDA). Tornadic signatures are indicated by a cyclonic inbound-outbound velocity couplet, where strong winds flowing in one direction and strong winds flowing in the opposite direction are occurring in very close proximity. The algorithm for this is the tornadic vortex signature (TVS) or the tornado detection algorithm (TDA).

Cyclonic Storm Yemyin (JTWC designation: 03B, also known as Deep Depression BOB 03/2007) was a deadly tropical cyclone that made landfalls on India and Pakistan in June 2007. The Pakistan Meteorological Department referred to Tropical Cyclone 03B as "Tropical Cyclone Yemyin". At the time, the official WMO body responsible for tropical cyclones in the Arabian Sea, the India Meteorological Department (IMD), did not name the storm. However, the IMD reassessed the system to have reached cyclonic storm strength, and retroactively named the storm Yemyin.. “Yemyin” means Hippo in Myanmar (Burma) Language.

Approximately 1 percent of tornadoes rotate in an anticyclonic direction in the northern hemisphere. Typically, systems as weak as landspouts and gustnadoes can rotate anticyclonically, and usually only those which form on the anticyclonic shear side of the descending rear flank downdraft (RFD) in a cyclonic supercell. On rare occasions, anticyclonic tornadoes form in association with the mesoanticyclone of an anticyclonic supercell, in the same manner as the typical cyclonic tornado, or as a companion tornado either as a satellite tornado or associated with anticyclonic eddies within a supercell.

Hurricane Emily formed on September 1 southeast of Bermuda. Emily made a cyclonic loop as a tropical storm. Emily strengthened into a hurricane out in the North Atlantic Ocean and by September 12, was no longer identifiable.Gil Clark.

Only two days later, the third depression of the season formed in southern Bay of Bengal and gradually strengthened into Cyclonic Storm Nilam. The cyclone made landfall over Southern India early on October 31 and dissipated on November 2.

Fry drowned off the north Queensland coast when the SS Gothenburg sank in February 1875, after striking a section of the Great Barrier Reef in cyclonic conditions.NT Government (2008). NT Place Names Register: Fry Court. Retrieved 6 February 2008.

The territory has a monsoonal/anti-cyclonic climate, with warm, wet, humid summers due to the influence of the East Asian monsoon, and cold, dry, windy conditions prevailing in the winter months courtesy of the Siberian high-pressure system.

James Dyson, inventor of the Dyson cyclonic separation vacuum cleaner, is from Dodington, and bought Dodington Park in 2003. Admiral Sir Edward Codrington GCB RN, hero of the Battle of Trafalgar and the Battle of Navarino was born here.

High gas velocities through these devices reduce the gas-liquid contact time, thus reducing absorption efficiency. Cyclonic spray scrubbers are capable of effectively removing some gases; however, they are rarely chosen when gaseous pollutant removal is the only concern.

CVA produces divergence as a result of how there is a loss of cyclonic vorticity. Coriolis vorticity in this situation is ignored because it acts about the same on all the air flowing through the base of the trough.

It rains over most of U.P. with very few arid or semi-arid patches. Snowfall doesn't occur but hail-storms, frost and dew occur often in U.P. The type of rainfall that U.P. receives is orographic, cyclonic and convectional.

These modulations, along with light availability, drive the abundance of phytoplankton in the region. The availability of phytoplankton significantly affects the marine food web and ocean health. The Anticyclonic eddies rotate clockwise and the Cyclonic eddies rotate counter- clockwise.

A depression formed in the Bay of Bengal on September 25, and quickly intensified into a cyclonic storm while moving northwestward. On September 26, the storm moved ashore Odisha. It eventually turned northward, dissipating over India on September 28.

Soon afterward, it was upgraded to a Category 1 Tropical Cyclone by the JTWC. On , Jal started weakening. Soon afterward, the IMD reported that Jal weakened into a Cyclonic Storm. Later that day, the JTWC downgraded Jal into a Tropical storm.

Once over land, the system began to weaken; the storm degraded to a cyclonic storm on November 13, when it was about south- southeast of Agartala. The storm then rapidly weakened into a remnant low over southern Assam that evening.

The ash cloud from this climactic eruption rose into the atmosphere. At lower altitudes, the volcanic ash was blown in all directions by the intense cyclonic winds of a coincidentally occurring typhoon, and winds at higher altitudes blew the ash southwestward.

Wrangel Island is influenced by both the Arctic and Pacific air masses. One consequence is the predominance of high winds. The island is subjected to "cyclonic" episodes characterized by rapid circular winds. It is also an island of mists and fogs.

In frontogenesis, temperature gradients need to tighten for initiation. For those situations Q-vectors point toward ascending air and the tightening thermal gradients. In areas of convergent Q-vectors, cyclonic vorticity is created, and in divergent areas, anticyclonic vorticity is created.

The storm underwent rapid intensification and reached super cyclonic storm status on October 27, as it turned westwards. Despite the immense strength of the storm, and many countries being affected by high tides and storm surges, there were no reported fatalities.

Cyclonic flow and cold air around the backside of this system led to significant Lake effect snows for areas downwind of the Great Lakes.The Weather Doctor. Lake-Effect Snow Climatology in the Great Lakes Region. Retrieved on 2006-11-29.

Its low density, therefore, lowers the atmospheric pressure on the coast. This low-pressure area caused by the berg wind draws the dense moist maritime air onshore to the right of the off-shore berg wind. Shear forces between these on- and off-shore winds on the right-hand side of the berg wind tend to cause clockwise (or cyclonic) rotation of the air in this region. In addition, on reaching the escarpment the maritime air curves to the right round the low-pressure zone due to Coriolis forces (in the southern hemisphere) accentuating the cyclonic circulation of the "coastal low".

The 2000 North Indian Ocean cyclone season was fairly quiet compared to its predecessor, with all of the activity originating in the Bay of Bengal. The basin comprises the Indian Ocean north of the equator, with warnings issued by the India Meteorological Department (IMD) in New Delhi. There were six depressions throughout the year, of which five intensified into cyclonic storms - tropical cyclones with winds of 65 mph (40 km/h) sustained over 3 minutes. Two of the storms strengthened into a very severe cyclonic storm, which has winds of at least 120 km/h (75 mph), equivalent to a minimal hurricane.

That day, the JTWC classified the system as Tropical Cyclone 02A, and it intensified into a cyclonic storm on November 13. The storm was located at an unusually low latitude of 6° N. After an eye developed in the center of the convection, the JTWC upgraded the storm to the equivalent of a minimal hurricane, estimating peak winds of 150 km/h (90 mph) on November 14\. By contrast, the IMD estimated peak winds of 100 km/h (65 mph), making the system a severe cyclonic storm. Subsequently, drier air weakened the storm, causing the convection to decrease.

In addition to environmental steering, a tropical cyclone will tend to drift slowly poleward and westward, a motion known as "beta drift". This motion is due to the superposition of a vortex, such as a tropical cyclone, onto an environment in which the Coriolis force varies with latitude, such as on a sphere or beta plane. It is induced indirectly by the storm itself, the result of a feedback between the cyclonic flow of the storm and its environment. Physically, the cyclonic circulation of the storm advects environmental air poleward east of center and equatorial west of center.

In May 2003, a tropical cyclone officially called Very Severe Cyclonic Storm BOB 01 produced the worst flooding in Sri Lanka in 56 years. The first storm of the 2003 North Indian Ocean cyclone season, it developed over the Bay of Bengal on May 10\. Favorable environmental conditions allowed the system to intensify steadily while moving northwestward. The storm reached peak maximum sustained winds of 140 km/h (85 mph) on May 13, making it a very severe cyclonic storm according to the India Meteorological Department (IMD), which is the official Regional Specialized Meteorological Center for the basin.

Cyclonic Storm Sagar was the strongest tropical cyclone to make landfall in Somalia in recorded history, and the first named cyclone of the 2018 North Indian Ocean cyclone season. Forming on May 16 east of the Guardafui Channel, Sagar intensified into a cyclonic storm on the next day, as it gradually organized. The storm turned to the west-southwest and traversed the entirety of the Gulf of Aden, making landfall over northwestern Somalia on May 19, farther west than any other storm on record in the North Indian Ocean. Sagar weakened into a remnant low on May 20\.

The storm slowly drifted west-northwestward, while deep convection consolidated around the system's well-defined center of circulation. In the early hours of 20 November, the IMD classified BOB 06 as a Cyclonic Storm, thereby officially naming it Helen. Early on 21 November, Helen continued to intensify into a Severe Cyclonic Storm, reaching its peak intensity of with a central pressure of . Shortly before landfall, the storm's convection sheared to the north, causing its low level circulation to fully expose followed by the JTWC issuing its final bulletin, reporting that the storm had weakened due to land interaction.

Development of the system proceeded very slowly for several days, with the cyclone struggling to intensify against the influence of moderate vertical wind shear. At 12:00 UTC on 29 April, Fani was upgraded to a severe cyclonic storm, with the system beginning to undergo rapid intensification. Fani continued rapidly intensifying, becoming an extremely severe cyclonic storm at 17:00 UTC on April 30. The Joint Typhoon Warning Center (JTWC) upgraded the system to a Category 4 tropical cyclone on the Saffir–Simpson scale at 06:00 UTC on May 2, following which, rapid intensification resumed.

In fixed-installation central vacuum cleaners, the cleaned air may be exhausted directly outside without need for further filtration. A well- designed cyclonic filtration system loses suction power due to airflow restriction only when the collection vessel is almost full. This is in marked contrast to filter bag systems, which lose suction when pores in the filter become clogged as dirt and dust are collected. In portable cyclonic models, the cleaned air from the center of the vortex is expelled from the machine after passing through a number of successively finer filters at the top of the container.

On 26 November, the storm reached an intensity equivalent to that of a modern-day severe cyclonic storm and subsequently turned northward. Gradually intensifying as it had previously, the tropical cyclone reached peak intensity with winds of 125 mph (200 km/h) as it was making landfall near the Bangladesh-West Bengal border on 29 November. Although the storm retained strong winds well inland, it was last monitored over central Bangladesh as a moderate cyclonic storm-equivalent on 30 November. The brunt of the tropical cyclone's damage was inflicted upon coastal areas of Bangladesh and West Bengal.

Fabric filters Hepa effect: without (outdoor) and with filter (indoor) A complicated blend of solid and liquid particles result in particulate matter and these particulate matter emissions are highly regulated in most industrialized countries. Due to environmental concerns, most industries are required to operate some kind of dust collection system to control particulate emissions. These systems include inertial collectors (cyclonic separators), fabric filter collectors (baghouses), electrostatic filters used in facemasks, wet scrubbers, and electrostatic precipitators. Cyclonic separators are useful for removing large, coarse particles and are often employed as a first step or "pre- cleaner" to other more efficient collectors.

On the next day, Nisarga further intensified to a severe cyclonic storm and turned to the northeast, ultimately making landfall approximately 95 km south of Mumbai. Nisarga rapidly weakened once inland and dissipated on 4 June. Nisarga was the second cyclone to strike the Indian subcontinent within two weeks time, after Cyclone Amphan, the first super cyclonic storm to have formed in the Bay of Bengal in the 21st century, devastated the state of West Bengal on May 2020. Making landfall in Maharashtra with winds of , Nisarga became the strongest storm to strike the state in the month of June since 1891.

On November 26, the storm reached an intensity equivalent to that of a modern-day severe cyclonic storm and subsequently turned northward. Gradually intensifying as it had previously, the tropical cyclone reached peak intensity with winds of 125 mph (200 km/h) as it was making landfall near the Bangladesh–India border on November 29\. Although the storm retained strong winds well inland, it was last monitored over central Bangladesh as a moderate cyclonic storm-equivalent on November 30\. The brunt of the tropical cyclone's damage was inflicted upon coastal areas of Bangladesh and West Bengal.

Cyclonic Storm Keila (IMD designation: ARB 02, JTWC designation: 03A) was the first named storm of the 2011 North Indian Ocean cyclone season. A weak system for much of its duration, Keila developed in the western Arabian Sea in late October 2011, amid an area of marginally favorable conditions. On November 2, it briefly organized enough to be classified as a cyclonic storm, which has maximum sustained winds of at least 65 km/h (40 mph). Given the name Keila by the India Meteorological Department (IMD), the storm quickly moved ashore southern Oman near Salalah, and weakened while meandering over the country.

Very Severe Cyclonic Storm Bulbul was a strong and very damaging tropical cyclone which struck the Indian state of West Bengal as well as Bangladesh in November 2019, causing storm surge, heavy rains, and flash floods across the areas. After crossing the Indochinese Peninsula, Severe Tropical Storm Matmo's remnants entered the Andaman Sea. It began to organize over the southern Bay of Bengal in the beginning of November, then it slowly intensified into a cyclonic storm as it moved north. In addition, it is only the second to make it to hurricane strength, the first being in 1960.

The 2008 North Indian Ocean cyclone season officially ran throughout the year during 2008, with the first depression forming on April 27. The timeline includes information that was not operationally released, meaning that information from post-storm reviews by the Joint Typhoon Warning Center (JTWC), and the India Meteorological Department (IMD), such as information on a storm that was not operationally warned on. This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation's during the 2008 North Indian Ocean cyclone season. During the year, 10 tropical depressions, 4 Cyclonic storms and 1 Severe Cyclonic storm formed.

During this time, the system remained weak, never intensifying beyond deep depression status. A strengthening ridge to the north turned the storm back to the west on November 30 into an area of lighter wind shear. On December 2, the system intensified into a cyclonic storm and eventually to a very severe cyclonic storm on the next day, with the IMD estimating peak 3-minute winds of 120 km/h (75 mph). The JTWC upgraded the system to the equivalent of a hurricane on December 4, estimating peak 1-minute winds of 140 km/h (85 mph).

Anticyclogenesis is the development or strengthening of an anticyclonic circulation in the atmosphere. It is the opposite of anticyclolysis (the dissolution or weakening of an anticyclone) and has a cyclonic equivalent known as cyclogenesis. Anticyclones are alternatively referred to as high pressure systems.

Other filters like cyclonic filters require the airflow to be high on a permanent basis, or else the performance of the filter drops. Therefore, the use of filters like turboswing make it possible to save vast amounts of energy in restaurant kitchen ventilation.

The storm completed its cyclonic loop by November 12 and resumed moving south-southwestward. Around 06:00 UTC on November 13, the cyclone fell below tropical storm intensity again and dissipated early on November 14 while located about south-southeast of Bermuda.

Soon afterwards, it was upgraded to a Category 1 Tropical Cyclone by the JTWC. On November 7, Jal started weakening. Soon afterwards, the IMD reported that Jal weakened into a Cyclonic Storm. Later that day, the JTWC downgraded Jal into a Tropical storm.

Betsy then rapidly intensified and became a Category 1 hurricane later that day. It executed a small cyclonic loop, before turning west on September 1\. Significant intensification resumed later that day. By late on September 3, Betsy became a Category 4 hurricane.

Dyson licensed the technology in North America from 1986 to 2001 to Fantom Technologies, after which Dyson entered the market directly. Following his success, other major manufacturers began to market their own cyclonic vacuum cleaners. In 1999, Dyson sued Hoover (UK) for patent infringement.

Sattari is part of interior rural Goa. Some of the recent news that emerged from there includes cyclonic winds hitting part of the region in mid-October 2018, farmers protesting land ownership issues, protests over electricity issues and potholes in the roads, among others.

In Oman, desert rainfall caused a small locust outbreak. Luban coexisted with Very Severe Cyclonic Storm Titli in the Bay of Bengal, marking the first time since 1971 that two storms of such intensity were active at the same time in the North Indian Ocean.

Typhoon Yagi developed on October 22. It was also named Paring by PAGASA. Peaking as a typhoon with winds of 130 km/h (80 mph), Yagi executed a cyclonic loop near the Ryukyu Islands. It then began weakening and dissipated near Taiwan on October 26.

There were 12 depressions that developed during the season. The first formed on June 20 in the northern Bay of Bengal. It soon moved ashore and dissipated on June 24. In August, there were two depressions and a cyclonic storm in the Bay of Bengal.

Satellite image of an upper tropospheric cyclonic vortex in the western North Pacific An upper tropospheric cyclonic vortex is a vortex, or a circulation with a definable center, that usually moves slowly from east-northeast to west-southwest and is prevalent across Northern Hemisphere's warm season. Its circulations generally do not extend below in altitude, as it is an example of a cold-core low. A weak inverted wave in the easterlies is generally found beneath it, and it may also be associated with broad areas of high-level clouds. Downward development results in an increase of cumulus clouds and the appearance of circulation at ground level.

Following further development, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert (TCFA) as they anticipated the system to develop into a tropical storm. Early the next morning the JTWC reported that the depression had intensified into a tropical storm and designated it as Cyclone 01B. The storm tracked towards the west-northwest due to a mid-level ridge over India. Later that morning RSMC New Delhi reported that the depression had intensified into a deep depression and reported it was expected to intensify into Cyclonic Storm Bijli. Around 1500 UTC, the RSMC New Delhi upgraded the system to a cyclonic storm and gave it the name Bijli.

After consolidating into a depression, the storm tracked slowly north-northwestward over the eastern Arabian Sea, and reached cyclonic storm intensity late on 10 June. Steady strengthening continued into 11 June, and the storm underwent rapid intensification late in the day. Vayu reached peak intensity as a high- end very severe cyclonic storm at 06:00 UTC on 12 June, with three-minute sustained winds of 150 km/h (90 mph) and a minimum pressure of 970 hPa (28.64 inHg). Despite initially being forecast to make landfall in the state of Gujarat, Vayu turned abruptly to the west on 13 June and moved away from the coast.

An area of disturbed weather south of the Gulf of Tehuantepec organized into a tropical depression at 18:00 UTC on October 11\. Steered northwest to west- northwest by a mid-level ridge to its north and a broad cyclonic circulation to its southwest, the depression intensified into Tropical Storm Lester at 18:00 UTC the next day. The system was initially forecast to become a hurricane amid light shear; however, interaction with the coastline of Mexico and the nearby cyclonic circulation instead caused Lester to weaken. Observations from a reconnaissance aircraft indicated the storm degenerated into a trough at 18:00 UTC on October 13.

This was because convection had begun to organize and upper-level analysis showed a cyclonic center on the east, just west of Guam and a cyclonic flow around its consolidating low-level circulation Centre. After 4 hours, JTWC issued its first warning and named it as Tropical Depression 04W. Early on June 23, PAGASA issued its first warning on the Tropical Depression and assigned its local named "Feria". In the afternoon, Nangka made its first landfall over Hernani, Eastern Samar at 5:00 pm PST (0900 UTC). and made its second landfall in Masbate around 10:00PM PST ( 1400 UTC). On June 24, Nangka rapidly slowed down while moving over Mindoro.

The IMD upgraded the deep depression to Cyclonic Storm Laila early on May 18. With further consolidation of the convection throughout the day, the JTWC noted that the storm "[appeared] to be rapidly intensifying", which is a term referring to a quick drop in barometric pressure that usually coincides with a sharp increase in winds. By late on May 18, an eye feature became evident on satellite imagery, and at 0000 UTC on May 19, the JTWC assessed Laila as producing peak winds of 75 mph (120 km/h), the equivalent of a minimal hurricane. A few hours later, the IMD upgraded Laila to a severe cyclonic storm.

The direction an eddy swirls can be categorized as either cyclonic or anticyclonic depending on the hemisphere. A counterclockwise movement of water in the Northern hemispheres is cyclonic, but the same counterclockwise movement is anticyclonic in the Southern hemisphere (Yasuda, 2000). Although eddies have large amounts of kinetic energy, their rotation is relatively quick to diminish in relation to the amount of viscous friction in water. They typically last for a few weeks to a year. The nature of eddies are such that the center of the eddy, the outer swirling ring, and the surrounding waters are well stratified and all maintain their distinct properties throughout the eddy’s short time-scale.

By June, those living in low areas had already been forced to abandon their homes. The summer was also characterized by extreme cyclonic activity. In July of that year alone, nine cyclones hit the region, which was significantly above the average of two per year.Pietz, David (2002).

The increase in buoyancy can have a significant atmospheric impact, giving rise to powerful, moisture rich, upward air currents when the air temperature and sea temperature reaches 25 °C or above. This phenomenon provides a significant driving force for cyclonic and anticyclonic weather systems (typhoons and hurricanes).

Super Typhoon Page formed on November 21 as a tropical depression. From there, it tracked slowly westward, making a cyclonic loop. Page continued westward, and strengthened into a Category 5 typhoon. It then accelerated northeastward, making landfall in Japan on November 30 as a Category 1 typhoon.

It then briefly turned east-northeastward, before recurving east- southeastward. Late on October 5, the hurricane weakened back to the Category 1\. The storm began to decelerate and execute a cyclonic loop late on October 6\. After about 24 hours, it began moving east-northeastward to northeastward.

Their life cycles span 5 to 14 days. The upper tropospheric cyclonic centers in the North Atlantic differ from that in the North Pacific. Most of them are detectable in the low tropospheric temperature field as cold troughs in the easterlies. They tend to vertically tilt toward the northeast.

It moved northward before eventually curving westward and dissipating on November 28. The final tropical cyclone developed southwest of Sri Lanka on December 21\. The system headed generally east-northeastward and strengthened into cyclonic storm on December 24, before demising well east of Sri Lanka on the following day.

On May 8, the cyclone turned west-northwestward. Further intensification occurred, with the deep depression becoming a cyclonic storm at 0600 UTC on May 9\. The storm maintained its intensity until weakening slightly early on May 10, while briefly tracking northwestward. Shortly thereafter, it made landfall near Salalah, Oman.

An area of disturbed weather developed gale-force winds and a cyclonic circulation, and was upgraded directly to tropical storm status on July 12. Estelle's winds peaked in velocity just after that. The cyclone then steadily weakened as it curved to the west northwest. Estelle dissipated on July 13.

The river descends over its course. The river has a non-pristine estuary that has been mostly unmodified. The estuary contains the seagrass Ruppia megacarpa and is naturally open to the ocean for two to six weeks per year, usually following a wet winter or a cyclonic event.

EF3 damage to a house near Mize, Mississippi. Expectations of a tornado outbreak arose on December 16 as a well-defined, positively-tilted trough existed across the central United States and very strong cyclonic flow developed southeast of this feature. At the surface, a cold front was expected to progress across the Southeast United States while an intensifying area of low pressure propagated northeast along the boundary. The environment along and ahead of this front was anticipated to be favorable for severe weather, featuring dewpoints as high as the low 70s Fahrenheit, mid-level Convective Available Potential Energy on the order of 1,000–2,000 J/kg, and a contributing to large hodographs and strong cyclonic updraft potential.

Very Severe Cyclonic Storm Gaja was the sixth named cyclone of the 2018 North Indian Ocean cyclone season, after Cyclones Sagar, Mekunu, Daye, Luban, and Titli. Forming on November 5 as a low pressure system over the Gulf of Thailand, the system crossed through Southern Thailand and the Malay Peninsula and eventually crossed into the Andaman Sea. The weak system intensified into a depression over the Bay of Bengal on November 10 and further intensified to a cyclonic storm on November 11, being classified 'Gaja'. After tracking west- southwestward for a number of days in the Bay of Bengal, Gaja made landfall in South India, shifted through Vedaranyam, Voimedu, Thiruthuraipoondi, Muthupet, Pudukkottai, Adirampattinam, Pattukkottai and Peravurani.

The term "cyclone" refers to such storms' cyclonic nature, with counterclockwise rotation in the Northern Hemisphere and clockwise rotation in the Southern Hemisphere. Depending on their location and strength, tropical cyclones are referred to by other names, such as hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, or simply as a cyclone. Generally speaking, a tropical cyclone is referred to as a hurricane (from the name of the ancient Central American deity of wind, Huracan) in the Atlantic and eastern Pacific oceans, a typhoon across the northwest Pacific ocean, and a cyclone across in the southern hemisphere and Indian ocean. Tropical cyclones can produce extremely powerful winds and torrential rain, as well as high waves and damaging storm surge.

The scope of this article is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula. There are two main seas in the North Indian Ocean — the Arabian Sea to the west of the Indian subcontinent, abbreviated ARB by the India Meteorological Department (IMD); and the Bay of Bengal to the east, abbreviated BOB by the IMD. This is the first season to have only two named storms since the 1993 North Indian Ocean cyclone season. However, multiple Depressions along with Cyclonic Storm Keila and Very Severe Cyclonic Storm Thane wreaked damage worth at least US$1.64 million and killing some 360 people overall.

The IMD then followed suit and reported that the system had peaked as a Very Severe Cyclonic Storm with 3-minute sustained windspeeds of 140 km/h (85 mph). During the rest of that day, the system continued to move westwards and weakened slightly as it started to interact with land. Thane then made landfall as a very severe cyclonic storm early on December 30 on the north Tamil Nadu coast between Cuddalore and Pondicherry. After making landfall, Thane rapidly weaken into a depression before the JTWC issued their final advisory during December 30, while the IMD continued to monitor the remnants of Thane until the depression weakened into a well marked low-pressure area on December 31.

The system moved to the northeast within the influence of the monsoon, and quickly intensified due to an anticyclone aloft providing favorable conditions. On June 18, the IMD upgraded the system to a cyclonic storm, and further to a severe cyclonic storm by 18:00 UTC that day. At 23:00 UTC, the storm made landfall on Gujarat near Diu, only the fourth cyclone since 1891 to strike the state in June. An hour later the IMD assessed peak 3-minute winds of 110 km/h (70 mph), based on the appearance of an eye feature. Meanwhile, the JTWC assessed slightly stronger 1-minute winds of 120 km/h (75 mph), equivalent to a minimal hurricane.

Severe Cyclonic Storm Fifteen developed in the Bay of Bengal on November 16. It meandered there for several days and peaked with winds of 130 km/h (80 mph). Eventually, it weakened and dissipated on November 28. It was tied for the longest-lived cyclone on record in the basin.

Convection gradually diminished as it moved through the north Atlantic Ocean, and later on September 15, Erin transitioned into an extratropical storm. The extratropical storm continued northeastward, and after crossing over southern Greenland, Erin's remnant merged with a high-latitude cyclonic flow to the east of Greenland on September 17.

Later that day, Cyclonic Storm BOB 06 weakened to a depression. At 1800 UTC on December 25, the JTWC issued a final advisory on the cyclone, citing that it degenerated into a remnant low pressure area while located about 685 km (425 mi) east-southeast of Dondra Head, Sri Lanka.

Reliance on staples made Canada economically dependent on more industrially advanced countries and the "cyclonic" shifts from one staple to another caused frequent disruptions in the country's economic life.Neill, Robin. (1972) A New Theory of Value: The Canadian Economics of H.A. Innis. Toronto: University of Toronto Press, pp. 45–46.

In the southern hemisphere, the strongest winds are to the left of the eye. That is because cyclonic winds below the equator, spin clockwise. On occasion, strong winds and wind gusts can occur in the rain bands of a tropical cyclone. And inside the eye the winds are relatively calm.

Lehar made its first landfall south of Port Blair, Andaman and Nicobar, early on 25 November. However, it maintained strength. The cyclone strengthened further and developed strong radial outflow, compensating the moderate vertical wind shear in the region. Following this development, the IMD upgraded Lehar to a Severe Cyclonic Storm.

One of them is located to the west of the GRS (in its wake region) in the southern equatorial belt.Vasavada (2005), p. 1979 These patches are called cyclonic regions (CR). The cyclones are always located in the belts and tend to merge when they encounter each other, much like anticyclones.

Shortly thereafter, the JTWC issued their final warning. The JMA later issued its final warning on Krovanh on September 21, as it transitioned into an extratropical cyclone. The extratropical remnants of Krovanh lingered to the east of Japan for a few days with a cyclonic loop before turning to the northeast.

On September 17, a tropical disturbance rapidly developed into a tropical storm and was given the name Nancy. Weak steering currents allowed Nancy to track across the southern portion of Hainan and do a cyclonic loop. The weak currents allowed Nancy to make landfall in Vietnam before dissipating on September 22.

While northeast of the Bahamas, Betsy moved erratically and executed another cyclonic loop. The storm steadily weakened, and was briefly downgraded to a Category 2 hurricane early on September 6\. However, it promptly re-strengthened into a Category 3 hurricane. Betsy then tracked southwestward and then westward through the Bahamas.

The cloud has also been detected by various probes and telescopes including the Hubble and Mars Global Surveyor. When Hubble Space Telescope viewed it in 1999, it was thought to be cyclonic storm. The diameter was measured to be approximately 1750 km, and featured an "eye" 320 km in diameter.

Maarutha developed as a depression in the first fortnight of April. Climatologically, the formation of tropical cyclones in the Bay of Bengal at this time of the year is rare. Only twelve Cyclonic Storms have developed over the Bay of Bengal this early in the year between 1891 and 2016.

At this time, the IMD classified the cyclone as a Very Severe Cyclonic Storm and reported that it had a wide eye. Rapid weakening followed shortly after landfall and the storm dissipated early on November 16. Major crop losses, property damage, and six fatalities were reported from the affected areas.

A tropical wave developed into Tropical Depression Six on September 8, while located about east of Brownsville, Texas. The depression moved south-southwestward and strengthened into Tropical Storm Frances on September 9\. Frances then executed a small cyclonic loop, moving westward, southward, and then northeastward. By September 10, the storm moved quickly northward.

Early the next day, organization substantially improved, prompting the JTWC to issue a Tropical Cyclone Formation Alert. Around 0900 UTC on October 1, the IMD upgraded the deep depression to Cyclonic Storm Onil. Upon being named, the storm became the first tropical cyclone on record to be named in the northern Indian Ocean.

The village experiences tropical climate with the average annual temperatures records at . Hot summers and cool winters are observed due to its proximity to the coast of the Bay of Bengal. It receives both Southwest monsoon and Northeast monsoon. It is most affected by the cyclonic storms that occur on the east coast.

Thereafter, the storm executed a cyclonic loop near Bermuda. By late on September 10, Clara accelerated northeastward and became extratropical at 1200 UTC on September 11. In its early stages, the storm dropped light rainfall in the Southeastern United States, peaking at in Beaufort, South Carolina. Additionally, Clara produced of precipitation in Bermuda.

On October 23, the second depression of the season formed. It developed out of a persistent low in the Arabian Sea. A day later, the depression became the first cyclonic storm of the season, and was named Murjan. It became the first storm to impact the Horn of Africa since Bandu in 2010.

The storm brought moderate rainfall to northern Sri Lanka. On January 6, Vavuniya reported the highest amount of rainfall of , followed by Puttalam, Anuradhapura and Trincomalee receiving each. The depression was the first storm in the North Indian Ocean to form in the month of January since Cyclonic Storm Hibaru in 2005.

It had a good cyclonic circulation, convection, and moisture content, but most significantly, a passing trough to the north provided the depression with favorable outflow. On June 6, the depression rapidly intensified into Tropical Storm and later Hurricane Alma. This made it the earliest hurricane in the basin since Hurricane Able in 1951.

The system formed into a tropical depression late on October 23 despite easterly vertical wind shear. By early on October 24, Warren became a tropical storm which then turned to the north. Between October 24 and October 26, the cyclone performed a small cyclonic loop. On October 26, Warren strengthened into a typhoon.

The majority of these eddies were cyclonic and had the ability to induce the upwelling of nutrient- rich water. Small scale topographic features such as headlands have been shown to cause substantial effects on the population dynamics of benthic invertebrates, such a change in the settlement patterns of crabs and sea urchin.

It weakened to a tropical storm four hours later. The storm then drifted slowly northwestward across South Florida and began executing a cyclonic loop. Late on October 18, the system emerged into the Gulf of Mexico near Boca Grande as a minimal tropical storm. The storm moved southwestward, southeastward, and then east-northeastward.

The story follows seven children and their teacher who are trapped inside a cave while a fierce cyclonic storm destroys the fictional town of Hills End. They face a struggle to survive as well as having to deal with their loss. A mystery also surrounds ancient aboriginal art found in the cave.

It moved west-northwest into an improving environment for further development before the system was named Lehar on 24 November, after it had developed into a cyclonic storm and passed over the Andaman and Nicobar Islands into the Bay of Bengal. Lehar gradually intensified further into a very severe cyclonic storm, equivalent to a category 1 hurricane on the Saffir-Simpson hurricane wind scale (SSHWS), reaching its peak on 26 November, with 3-minute sustained wind speeds of and a minimum central pressure of . Moving along a generally west-northwestward path in the following days, the storm passed over an area having cooler waters and a moderate vertical wind shear. The storm's low-level circulation center (LLCC) started losing its structure, triggering a weakening trend.

The 2002 Oman cyclone (JTWC designation: 01A, officially known as Cyclonic Storm ARB 01) was a tropical cyclone that struck the Dhofar region of Oman in May 2002. The first storm of the 2002 North Indian Ocean cyclone season, it developed on May 6 in the Arabian Sea, and it maintained a general west- northwest track for much of its duration. The system reached cyclonic storm status on May 9, meaning it attained winds of greater than 65 km/h (40 mph), and on May 10 it made landfall near Salalah; shortly thereafter it dissipated. The storm was rare, in the sense that it was one of only twelve tropical cyclones on record to approach the Arabian Peninsula in the month of May.

The following outline is provided as an overview of and topical guide to tropical cyclones: Tropical cyclone - storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor contained in the moist air. They are fueled by a different heat mechanism than other cyclonic windstorms such as nor'easters, European windstorms, and polar lows. The characteristic that separates tropical cyclones from other cyclonic systems is that at any height in the atmosphere, the center of a tropical cyclone will be warmer than its surroundings; a phenomenon called "warm core" storm systems.

12 January 1967. p. 13. The 1967 snowstorm coincided with the operation of Deep Drainage System that resulted in the total draining of what was left of Lake Texcoco. After the disappearance of Lake Texcoco, snow has never fallen again over Mexico City. The region of the Valley of Mexico receives anti-cyclonic systems.

A system was recorded by German shipping logs on July 3. On July 10, a storm of unknown strength was encountered by the USS Jamestown. There was a moderate gale, rain, squalls, diving barometer, choppy seas, and winds that changed direction in a counter clockwise manner. On August 9, a severe cyclonic storm struck Hawaii.

The supercell thunderstorm first showed evidence in the damage survey near Bushnell. On several farms broad convergent and cyclonic crop damage exhibited evidence of the parent tornadocyclone. Trees were uprooted and structural damage varied with windows broken and buildings partially unroofed. A funnel cloud was spotted at 4:01 pm about south of Prairie City.

The depression executed a small cyclonic loop, developing deep and organized convection near the circulation. Late on August 6, it transitioned into Tropical Depression Six. The depression moved northeastward toward the Azores, intensifying into Tropical Storm Edouard on August 8. Shortly thereafter it reached peak winds of , and subsequently it moved past the northern Azores.

The Gascoyne has a moderate arid tropical, climate. It is generally warm all year round, with mean maximum daily temperatures ranging from in July to in January. The region receives about 320 days of sunshine per year. Annual rainfall is low and variable, averaging about , most of which occurs as a result of cyclonic activity.

Malkangiri was worst affected, with many houses submerged. Several parts of outer Malkangiri city and rural areas of the district reportedly received heavy cyclonic rains. Several houses had submerged into water, leaving many people homeless. According to reports, a maximum rainfall total of 284 mm was recorded at Malkangiri by the India Meteorological department (IMD).

Lutjeharms J.R.E., Wedepohl P.M., and Meeuwis J.M. "On the surface drift of the East Madagascar and Mozambique Currents." South African Journal of Science 96.3 (2000). The Northern Indian Ocean lies within a large anticyclonic supergyre, northern Madagascar lies between this gyre and a cyclonic gyre in the northern Indian Ocean.Ali, Jason R., and Matthew Huber.

Around 1500 UTC, the RSMC New Delhi upgraded the system to a cyclonic storm and gave it the name Bijli. Partial convective banding developed around the periphery of the system as it intensified. The conditions for good outflow were present but did not develop. Around this time, the forward motion of the storm also slowed.

The deep depression moved slowly to the north at first, steered by an anticyclone to the northeast. The IMD upgraded the system to a cyclonic storm at 00:00 UTC on 29 October, giving it the name Chapala. Around the same time, the storm turned towards the west, influenced by another anticyclone to its northwest.

Pannawonica’s weather is recorded by the Australian Bureau of Meteorology station number 005069, which was opened in 1971. Between 1971 and 2005, the mean maximum temperature at Pannawonica ranged from 26.7 °C in July to 40.9 °C in January. Pannawonica experiences a wet season that can stretch from December to March, and cyclonic storm events.

The storm moved northeastward and later curved to the east-northeast. Late on October 7, Fox made landfall on Bermuda with winds of 105 mph (165 km/h). Fox weakened over the next several days and later executed a large cyclonic loop. By October 16, it became extratropical while well east-southeast of Newfoundland.

The depression continued west-northwestward, passing north of the Leeward Islands, before drifting northwestward. Inga became a tropical storm again on September 29\. It continued to intensify, and achieved hurricane status on September 30, while curving northeastward. The storm then turned towards the south, and ultimately completed a cyclonic loop as it bent back westward.

Cyclonic Storm Nisha (IMD designation: BOB 07, JTWC designation: 06B) was a fairly weak, but a catastrophic cyclone that struck Sri Lanka, and India which killed over 200. It was the ninth tropical cyclone of the 2008 North Indian Ocean cyclone season, and the seventh tropical cyclone in the Bay of Bengal that year.

On July 26 a depression formed inland over the Ganges delta. Early on July 30, the system was upgraded to a cyclonic storm by the IMD and named as Komen while making a U-turn. On August 2, Komen was no longer a tropical cyclone. Torrential rains impacted much of Myanmar, causing widespread flooding.

In April 1914 a cyclonic storm swept through Helidon destroying the Catholic Church and severely damaging the convent, as well as many of the other buildings in the town – the Methodist Church, the school, post office and many businesses. St. Joseph's Catholic Church was rebuilt and was opened in September 1914 by Archbishop Duhig.

Cyclone Phet formed in May 2010, about 1100 km away from Karachi. It travelled along the coast, striking Oman then affecting the coast of Balochistan, giving record-breaking rain amounts there. Gwadar, for instance, got 372 mm rainfall in 36-hours. In May 1902, a cyclonic storm struck the coast in the vicinity of Karachi.

Another tropical depression formed in the Bay of Bengal on October 25 and moved northwestward. The depression became a cyclonic storm the following day The storm then turned to the northeast and then back to the northwest were its winds peaked at 45 mph (72 km/h) before dissipating off the coast of Bangladesh on October 28.

The entire system is capped by an inversion consisting of a layer of warm air that has moved horizontally off the plateau at the level of the upper edge of the escarpment. This inversion layer prevents the upwardly spiraling cyclonic air of the coastal low from rising above 1000–1500 m, thus preventing it from causing significant precipitation.

Striking Ceylon as a super cyclonic storm, the storm wrought tremendous damage. Winds well in excess of hurricane- force battered the region for over six hours, destroying more than 5,000 homes. In eastern Rameswaram, a passenger train carrying 115 people was swept away by a surge, killing all on board. Nearly every structure in Dhanushkodi was destroyed.

Because air must conserve its angular momentum, this flow configuration induces a cyclonic gyre equatorward and westward of the storm center and an anticyclonic gyre poleward and eastward of the storm center. The combined flow of these gyres acts to advect the storm slowly poleward and westward. This effect occurs even if there is zero environmental flow.

Electricity was provided by USCG Generator. Auxiliary health care was provided by USCG emergency medical staff. Casco Cove is one of the most isolated and remote airports in the United States. Flying into and taking off from the airport was hazardous, as the weather is characterized by persistently overcast skies, high winds, and frequent cyclonic storms.

Adak lies in the subpolar oceanic climate zone (Cfc), characterized by persistently overcast skies, moderated temperatures, high winds, significant precipitation and frequent cyclonic storms. Winter squalls produce wind gusts in excess of . During the summer, extensive fog forms over the Bering Sea and North Pacific. Average temperatures range from , but wind chill factors can be severe.

Influenced by the low, the depression moved southward. The system completed a cyclonic loop in the central gulf, and by early on September 18 was drifting northward. As a result of wind shear, the center of circulation was separated from the deep convective activity. Early the next day, deep convection persisted in a small area northeast of the center.

The district is prone to cyclonic rainfalls during the monsoons. The cyclone of 1999 caused maximum damage in this district. Mahanadi is the longest river in Jagatsinghpur and Alaka, Biluakhai, Hansua, Devi and Paika are among the major rivers which pass through the district .Two main canals are Taladanda & Machhagaon which are chief sources of flow irrigation.

On September 21, the storm curved south-southeastward while south of the Azores. Later that day, Nadine transitioned into a non-tropical low pressure area. Due to favorable conditions, the remnants of Nadine regenerated into a tropical cyclone on September 24\. After re-developing, the storm executed a cyclonic loop and meandered slowly across the eastern Atlantic.

Thereafter, Warren began to move erratically. Early on October 25, the JMA classified Warren as a severe tropical storm. After performing a small cyclonic loop, Warren, still embedded in the monsoon trough, began to drift westward, while a mid-latitude cyclone was located to the cyclone's north. Later that day, Warren existed PAGASA's area of responsibility.

During the festival days, 150,000 devotees come to Yanam to receive the blessings of Lord Venkanna Babu. The Ratham was built in 1950 by the then Committee under then Assemblée Répresentative, Kanakala Tatayya Naidou. The Ratham's weight is around 15 tonnes. It was partially damaged to the heavy cyclonic storm in November 1996 but was renovated in 1998.

In the cases of Lake-effect snow and polar lows, the convective systems form over warm water bodies when cold air sweeps over their surface and leads to an increase in moisture and significant vertical motion. This vertical motion leads to the development of showers and thunderstorms in areas of cyclonic flow on the backside of extratropical cyclones.

At 1200 UTC on November 30, the IMD issued its first complete advisory on the cyclone, naming it Severe Cyclonic Storm Agni and estimating peak winds at 100 km/h (65 mph); the agency predicted the storm would continue northwestward and strengthen slightly before weakening. At its peak, the cyclone had a barometric pressure of 985 mbar.

A tropical disturbance was spotted about 650 mi (930 km) southwest of Acapulco on July 12. By the evening of July 15, cyclonic turning was evident and the system was upgraded to a tropical depression. Moving unsteadily to the west-northwest, the system weakened, dissipating a few hundred miles west-northwest of where it had formed.

Janaki, sister of Mohan, cannot tolerate it, so she brings out the truth before Krishna through Ratnam. By the time, Sarada consumes poison. Immediately, Krishna lifts her in a cyclonic night and drives to the garden where Mohan and Sarada spent their childhood. There, he allows Sarada to die in front of Mohan, who also succumbs to the shock.

Left-moving supercells are very rare, as cyclonic storms usually turn to the right of the mean flow.Anticyclonic (Left- Moving) Supercell National Weather Service Birmingham, Alabama. Accessed 2009-06-05. It is unknown whether this leftward movement was due to an atmospheric interaction or terrain-induced movement, as the storm moved straight up the Connecticut River valley.

James Dyson has become a billionaire from developing and marketing bagless vacuum cleaners based on cyclonic separation of dust, initially inspired by seeing a sawdust separator at a sawmill. Analogous devices for separating particles or solids from liquids are called hydrocyclones or hydroclones. These may be used to separate solid waste from water in wastewater and sewage treatment.

Chapala rapidly intensified over the Arabian Sea into an Extremely Severe Cyclonic Storm, becoming the strongest in the Arabian Sea since Gonu in 2007. Chapala also became the only hurricane force system to make landfall in Yemen, and the first since 1922 in Socotra. Chapala was followed by Megh, which reached a weaker intensity in the same general area.

A streamline analysis is a series of arrows oriented parallel to wind, showing wind motion within a certain geographic area. "C"s depict cyclonic flow or likely areas of low pressure, while "A"s depict anticyclonic flow or likely positions of high- pressure areas. An area of confluent streamlines shows the location of shearlines within the tropics and subtropics.

Vorticity in the atmosphere is created in three different ways, which are named in their resultant vorticity. These are; Coriolis vorticity, curvature vorticity, and shear vorticity. For example, at the base of a trough, there is curvature and shear vorticity. Curvature vorticity is due to the increasing cyclonic turning as an air parcel enters the trough base.

Cold-core rings are a type of oceanic eddy, which are characterized as unstable, time-dependent swirling ‘cells’ that separate from their respective ocean current and move into water bodies with different physical, chemical, and biological characteristics.Lochte, K. and O. Pfannkuche. 1987. Cyclonic cold-core eddy in the eastern North Atlantic. II. Nutrients, phytoplankton and bacterioplankton.

A tropical disturbance developed just to the east of Acapulco on July 3. The disturbance then turned west, moving at 16kt began to intensify over 85.F water. With satellite imagery showing a cyclonic circulation about in the center, the disturbance was upgraded to a tropical depression on July 6 about 750 n mi west of Acapulco.

On May 30, a depression formed in the Bay of Bengal. It moved north-northeastward and strengthened to a 60 mph tropical storm on June 2. BOB 02 affected the same region as the super cyclonic storm nearly a month earlier. Although the storm disrupted relief efforts, as a result of well-executed warnings, it caused no reported fatalities.

The system killed 35 people before weakening and turning to the northwest. It re-intensified into a very severe cyclonic storm, but weakened just off the coast of Pakistan due to wind shear. The storm killed 609 people in the country due to flooding. The final two depressions had their origins from the western Pacific basin.

Extremely Severe Cyclonic Storm Phailin (; )Why cyclone Phailin is named so IBNLive.com (CNN–IBN), 2013-10-11. was the most intense tropical cyclone to make landfall in India since the 1999 Odisha cyclone. The system was first noted as a tropical depression on October 4, 2013 within the Gulf of Thailand, to the west of Phnom Penh in Cambodia.

A polar low over the Barents Sea in February 1987 Although cyclonic activity is most prevalent in the Eurasian Arctic with approximately 15 lows per winter, polar lows also occur in Greenland and the Canadian Arctic. Polar lows can occur at any time during the year, with summer lows tending to be weaker than winter lows.Halldór Björnsson. Global circulation.

Very Severe Cyclonic Storm Ockhi was a strong tropical cyclone that devastated parts of Sri Lanka and India in 2017, and was the most intense tropical cyclone in the Arabian Sea since Cyclone Megh in 2015. The ninth depression, and the third and strongest named storm of the 2017 North Indian Ocean cyclone season, Ockhi originated from an area of low pressure that formed over the southwest Bay of Bengal on November 28. The storm organized into a Depression off southeast coast of Sri Lanka on November 29, causing damage to property and life in Sri Lanka while passing by. Due to high atmospheric moisture and warmer oceanic surface temperature between Sri Lanka and Kanyakumari (Cape Comorin) in mainland India, Ockhi intensified into a cyclonic storm on November 30.

A well-defined eye developed in the center of convection, and after moving over a local increase in ocean heat content, Gonu rapidly deepened. Cyclone Gonu off the coast of Oman on June 5 Late on June 3, the IMD upgraded the storm to Very Severe Cyclonic Storm Gonu. With warm waters, low amounts of vertical wind shear, and favorable upper-level outflow, Gonu strengthened further to attain peak 1-min sustained winds of 270 km/h (165 mph) and gusts to 315 km/h (195 mph), about 285 km (175 mi) east-southeast of Masirah Island on the coast of Oman. The IMD upgraded it to Super Cyclonic Storm Gonu late on June 4, with peak 3-min sustained winds reaching 240 km/h (150 mph) and an estimated pressure of 920 mbar.

It continued westward toward eastern India at a slow pace, later turning more to the west-northwest. Early on 6 November, the storm began rapidly intensifying, and the IMD upgraded the storm to a severe cyclonic storm and later a very severe cyclonic storm. At 04:00 UTC that day, an irregular eye formed in the middle of the central dense overcast, which quickly became more circular and distinct. At 06:00 UTC on 6 November, the JTWC estimated peak 1 minute winds of 215 km/h (130 mph), the equivalent of a Category 4 on the Saffir-Simpson scale, and a minimum barometric pressure of . The IMD assessed a much lower intensity, estimating 3 minute winds of 145 km/h (90 mph) based on a Dvorak rating of 4.5.

Later that day, the JTWC initiated advisories on the system, designating it with 02B. The next day, BOB 02 further intensified into a cyclonic storm and was named Nilam by the IMD. The name Nilam was suggested by Pakistan, it is the Urdu word for Sapphire. The storm made landfall at peak intensity near Mahabalipuram on 31 October, and started weakening.

Finally, the dust is collected. This is done via a variety of means, depending on the application and the dust being handled. It can be as simple as a basic pass-through filter, a cyclonic separator, or an impingement baffle. It can also be as complex as an electrostatic precipitator, a multistage baghouse, or a chemically treated wet scrubber or stripping tower.

The storm then began to execute a small cyclonic loop, which continued until early on October 8\. By then, the cyclone was moving eastward and weakened to a tropical storm around 00:00 UTC on October 9\. About 24 hours later, the system weakened to a tropical depression. At 18:00 UTC on October 10, the depression dissipated about northeast of Bermuda.

Around the same time, the JTWC began issuing warnings on the system as Tropical Cyclone 04A. The system remained nearly stationary and quickly organized. By 12:00 UTC on September 22, the IMD had upgraded it to a severe cyclonic storm, giving it the name Mukda. Three hours later, the agency estimated peak 3 minute winds of 100 km/h (65 mph).

The nascent system quickly organized, aided by the decreasing wind shear, as well as a surge in the monsoon. The IMD upgraded the depression to a cyclonic storm at 03:00 UTC on May 17. At 12:00 UTC that day, the Joint Typhoon Warning Center (JTWC) began issuing warnings on the system with its own designation Tropical Cyclone 02B.

A well-defined area of low pressure was identified over the southwestern Bay of Bengal on November 17\. The following day, the system developed into a depression as it moved slowly northwestward. On November 20, as it neared the coast of Tamil Nadu, it intensified into a cyclonic storm, with gusts estimated as high as . Shortly thereafter, it made landfall near Chennai.

In its formative stages, the storm produced moderate rainfall in the Andaman and Nicobar Islands, totaling at Mayabunder. Later, as the storm was approaching Myanmar, it dropped of rainfall on Hut Bay. Several stations in Tamil Nadu reported light precipitation, including a total of at Adirampattinam. Along the coast of Odisha, the fringes of the cyclonic storm dropped light rainfall, reaching at Swampatna.

Around this time, the IMD estimated that the storm had three- minute sustained winds of 240 km/h (145 mph), classifying Gay as a modern-day Super Cyclonic Storm. Additionally, the agency estimated the cyclone's central pressure to have decreased to 930 mbar (hPa; 27.46 inHg). Around 1800 UTC, Gay made landfall over a sparsely populated area near Kavali, India, in Andhra Pradesh.

Monsoon rainfall accounts for about 94% while the balance occurs during the dry months, which is the winter period. Depending on the season, the wind direction also varies significantly. Thunderstorms from April to August are also a climatic feature with maximum recorded rainfall of during one thunderstorm in some areas. Cyclonic effects with wind speed reaching /s have been recorded in some areas.

Extremely Severe Cyclonic Storm Mekunu was the strongest storm to strike Oman's Dhofar Governorate since 1959. The second named storm of the 2018 North Indian Ocean cyclone season, Mekunu developed out of a low pressure area on May 21\. It gradually intensified, passing east of Socotra on May 23 as a very intense tropical cyclone. On May 25, Mekunu reached its peak intensity.

Late on November 6, the system turned to the west. On the following day as the cyclone began turning south-southwestward, a weather station on Bermuda observed sustained winds of . The storm weakened to a tropical depression early on November 9 and began to execute a cyclonic loop. Around 12:00 UTC on November 10, it re- intensified into a tropical storm.

The NEB is one of the most active belts on the planet. It is characterized by anticyclonic white ovals and cyclonic "barges" (also known as "brown ovals"), with the former usually forming farther north than the latter; as in the NTropZ, most of these features are relatively short-lived. Like the South Equatorial Belt (SEB), the NEB has sometimes dramatically faded and "revived".

In December 2016 INS Bitra was operationally deployed to rescue 800 tourists together with INS Bangaram, INS Kumbhir (L22) and LCU 38 from Havelock Island and ferry them to Port Blair as a result of a severe cyclonic storm in the Bay of Bengal. In February 2016 together with INS Saryu visited Yangon in Myanmar on an official port visit.

Overall, Murjan lasted two and a half days before dissipating over Nugaal region in northeastern Somalia. Only two days later, the third depression of the season formed in southern Bay of Bengal. It eventually strengthened into Cyclonic Storm Nilam, and it made landfall over Southern India early on October 31. Moving further inland, the storm affected two states and caused widespread flooding.

On April 26, a depression formed to the west of Sumatra, with the IMD giving the storm the identifier BOB 02. The system slowly organized while curving towards the northeast. On April 27, at 00:00 UTC, the IMD upgraded the system to a deep depression. Later that day, the system intensified into Cyclonic Storm Fani, while shifting to the northwest.

At 00:00 UTC on May 16, a depression formed in the southeast Bay of Bengal and was identified as BOB 01. Six hours later, the Indian Meteorological Department (IMD) upgraded the system to a deep depression. The system began bringing torrential rainfall to Sri Lanka and Southern India. Around 15:00 UTC, the system further developed into Cyclonic Storm Amphan.

On October 14, Cyclonic Storm Luban struck Yemen in the midst of a civil war and a cholera outbreak, and forced 2,203 families to leave their houses, utilizing 38 schools for shelter. The storm killed 14 people in the country, and injured another 124 people, with 10 people were still missing. Public loss in Yemen were at US$1 billion.

In early April, several cyclonic vortices were noted south of the Marshall Islands. One of these circulation centers tracked westward and later developed into a tropical depression near Micronesia early on April 15. Steadily intensifying, the disturbance intensified into a tropical storm by 1800 UTC the next day. At roughly the same time, Hope began to curve slightly to the north.

A tropical disturbance emerged off the coast of Central America. Cyclonic turning was noted on the afternoon of October 19, and a tropical depression formed 350 mi (560 km) south of Acapulco. Staggering west- northwestward, the cyclone became a tropical storm by the morning of the October 22. Maximum sustained winds increased to 50 mph (80 km/h) late on October 24.

The circulation of the Nordic Seas is cyclonic. The Nordic Seas exchange water with the North Atlantic in the upper ocean. Warm water from the North Atlantic enters the Nordic Seas from the east, specifically in the Norwegian Atlantic Current (part of the North Atlantic Current). The western boundary of the Nordic Seas is the southward-flowing East Greenland Current.

The wedge-tailed eagles had a large timber enclosure with a frame inside in which they could build a nest. The cages had an inner shell of wire netting to guard against cyclonic blows and carpet pythons. In 1955, a new, outdoor variety platypussary was constructed. This platypussary was later taken over by scrub turkeys who buried it under mounds of earth.

It looks like a cyclonic storm, similar to a hurricane, but it does not rotate. The cloud appears during the northern summer and at high latitude. Speculation is that this is due to unique climate conditions near the northern pole. Cyclone-like storms were first detected during the Viking orbital mapping program, but the northern annular cloud is nearly three times larger.

In the Bhil Ramayana, Gautama attacks and imprisons Indra, who is freed when he promises to shower rain on the crops as the rain god. He must also ensure that one quarter of the crops is dedicated to Gautama. Here, Ahalya is interpreted as dry and burnt land, eager for the rains sent by Indra, who is tamed by the wild cyclonic Gautama.

Natural hazards include earthquakes, drought, and occasional cyclonic disturbances from the Indian Ocean, which bring heavy rains, and flash floods. Natural resources include geothermal energy. Inadequate supplies of potable water, limited arable land and desertification are current issues. Djibouti is a party to international agreements on biodiversity, climate change, desertification, endangered species, Law of the Sea, ozone layer protection, ship pollution, and wetlands.

Jean started weakening and dissipated on November 13 because of lack of upper level divergence. The Japan Meteorological Agency continued to track Jean for six more days. During that time, Jean made an anti-cyclonic loop to the south, where Jean was declared an extra-tropical low on November 19 in the open South China Sea. No damage or fatalities were reported.

A strong mid-level southeasterly steering current caused Roger to move northwest. Roger then executed a cyclonic loop on October 5. The storm continued to move northwest until north of the ridge axis, after which it turned in a north-northeastward direction. Roger then became an extratropical cyclone on October 8 as it merged with a cold front south of Japan.

The entire population (estimate of about 200 birds in 1905 and 1984) is restricted to the single island of Narcondam in the Andaman Island chain. The island is clothed in forests and rises to a height of about 2300 feet above sea level. It is largely devoid of human presence. The island is often hit by cyclonic storms in the Bay of Bengal.

Installation of a hydrodynamic separator along an Arizona highway Hydrodynamic separators (HDS) are stormwater management devices that use cyclonic separation to control water pollution. They are designed as flow-through structures with a settling or separation unit to remove sediment and other pollutants. HDS are considered structural best management practices (BMPs), and are used to treat and pre-treat stormwater runoff.

Figure 1 - Irrigated cyclone scrubber Cyclonic spray scrubbers are an air pollution control technology. They use the features of both the dry cyclone and the spray chamber to remove pollutants from gas streams. Generally, the inlet gas enters the chamber tangentially, swirls through the chamber in a corkscrew motion, and exits. At the same time, liquid is sprayed inside the chamber.

Except in the southern end of the basin, the spreading center has been subducted.S.R. Clark, R.D. Müller; Convection models in the Kamchatka region using imposed plate motion and thermal histories; Journal of Geodynamics; Vol. 46 (2008) pp. 1–9 The water in the basin circulates in a cyclonic gyre, with the western Kamchatka Current flowing southward along the Kamchatka Peninsula.

Downwelling and Upwelling processes in the open ocean leads to a warm-core in Anticyclonic eddies and a cold-core in Cyclonic eddies. The fast-moving currents in the Gulf Stream meander and pinch-off to create eddies. These eddies retain the physical properties of their parent water mass (e.g. temperature, density, salinity, and other ocean dynamic properties) when they separate.

It looks like a cyclonic storm, similar to hurricane, but it does not rotate. The cloud appears during the northern summer and at high latitude. Speculation is that this is due to unique climate conditions near the northern pole. Cyclone-like storms were first detected during the Viking orbital mapping program, but the northern annular cloud is nearly three times larger.

In the real atmosphere, highs and lows have rarely the same strength and thus equal wind flow pattern around them. Thus the advection of warm or cold air is rarely equal. Furthermore, their shape and position are rarely as perfect as in the illustration quadrants either. There are thus 3 types of saddles or cols: the symmetrical, the cyclonic and anticyclonic.

On July 22, the IMD began monitoring a depression over the Bay of Bengal. Tracking west-northwest, the system intensified into a cyclonic storm later that day before making landfall in Andhra Pradesh, just north of Vishakhapatnam. Once onshore the storm accelerated towards the northwest and weakened. By July 24, the remnants of the cyclone were located over the state of Maharashtra.

Shortly after, the depression was upgraded to a deep depression and further strengthened into a cyclonic storm the following day. The small storm moved slowly towards the west and weakened as wind shear began to increase. The storm weakened below tropical storm intensity later that day and the initial final advisory was issued. However, the system redeveloped and advisories resumed the next day.

A near-equatorial trough spawned a low pressure area on December 22 in the central Bay of Bengal. A circulation within the system developed into a depression on December 23 about 500 km (310 mi) east-southeast of Sri Lanka. A low-latitude storm, the system organized while moving slowly westward. On December 24, the depression strengthened into a deep depression, and the following day into a cyclonic storm, the same day that the JTWC classified it as Tropical Cyclone 04B. An eye developed in the center of the blossoming convection, and the system rapidly intensified into a very severe cyclonic storm on December 26\. According to the IMD, the cyclone attained peak winds of 165 km/h (105 mph), and made landfall at that intensity along eastern Sri Lanka near Trincomalee around 12:00 UTC on December 26.

As the storm continued to develop, the radius of maximum winds shrank, resulting in a smaller storm than the previous Cyclone Chapala. At 12:00 UTC on November 7, the JTWC upgraded Megh to the equivalent of a hurricane after a small defined eye became evident. The storm began rapid deepening that day due to the continued low shear and warm water temperatures, and the convection became more symmetric and circular. Such intensification was not anticipated by tropical cyclone forecast models, which emphasized that the external conditions, such as dry air from the west, would be unfavorable. At 06:00 UTC on November 7, the IMD upgraded Megh to a severe cyclonic storm, and just nine hours later upgraded it to a very severe cyclonic storm - the equivalent to hurricane intensity with 3 minute winds of 120 km/h (75 mph).

Upon strengthening into a cyclonic storm, the India Meteorological Department (IMD) assigned the name Bulbul. It continued intensifying and increasing in speed for the next three days, however still slowly moving north and prompting the IMD to issue coastal warnings for Bangladesh and West Bengal of India and prohibit all fishermen activity, beach activity, and boating in and around the Bay of Bengal. About a day later, Bulbul made landfall near Sagar Island in West Bengal around 18:30 GMT on 9 November, killing at least two people and weakening back to a Severe Cyclonic Storm as it interacted with land and unleashed a high storm surge. Not too long after this land interaction, Bulbul rapidly weakened into a deep depression the next day as it began to move over Bangladesh, however still causing very heavy rains.

Though Kalyāṇōtsavām has been performed since old days and Rathotsavam started some 150 years ago with the original Ratha that was sponsored by Kasireddy family. The New Ratham was built in 1952 by the then Committee under then Assemblée Répresentative, Kanakala Tatayya Naidou. The Ratham's weight is around 15 tonnes. It was partially damaged to the heavy cyclonic storm in November 1996 but was renovated in 1998.

The eddies size and strength decline with distance from major ocean currents. The amount of energy decreases from the rings associated with the major currents and down to eddies remote from those currents. Cyclonic eddies have the potential to cause upwelling that would affect the global primary-production budget. Upwelling brings cold, nutrient-rich water to the surface resulting in an increase in productivity.

Despite near normal water temperatures over the Arabian Sea, no storms developed in that portion of the basin. Convection was also lower than normal across the Bay of Bengal. The main factor against tropical cyclogenesis was persistently unfavorable wind shear. Overall, there were six depressions, five of which intensified into a cyclonic storm, which has maximum sustained winds of at least 65 km/h (40 mph).

A depression formed out of an area of convection southwest of India on September 30\. The next day, it intensified into Cyclonic Storm Onil. becoming the first tropical cyclone on record to be named in the northern Indian Ocean. Cyclone Onil quickly attained its peak intensity on October 2 with winds of 100 km/h (65 mph) and a barometric pressure of 990 mbar (hPa; 29.23 inHg).

Simultaneously, the system was driven toward the north by a ridge of high pressure to the northeast. At the time, the cyclone was located about east of Sri Lanka. The storm continued to intensify, becoming a very severe cyclonic storm on May 12. That day, the JTWC upgraded Tropical Cyclone 01B to the equivalence of a minimal hurricane with winds of 120 km/h (75 mph).

Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere. Cyclogenesis is an umbrella term for several different processes that all result in the development of some sort of cyclone. It can occur at various scales, from the microscale to the synoptic scale. Extratropical cyclones begin as waves along weather fronts before occluding later in their life cycle as cold-core systems.

In addition, the India Meteorological Department estimated the system became a severe cyclonic storm, which has sustained winds of at least . On June 12, the storm attained a minimum pressure of while continuing westward. On June 13, the eye of the cyclone passed over Masirah Island for a 40-minute period, producing peak sustained winds of 167 km/h (104 mph) and a minimum pressure of .

The India Meteorological Department estimated 10 minute sustained winds of 175 km/h (110 mph), making Mekunu an extremely severe cyclonic storm. The American-based Joint Typhoon Warning Center estimated slightly higher 1 minute winds of 185 km/h (115 mph). While at peak intensity, Mekunu made landfall near Raysut, Oman, on May 25. The storm rapidly weakened over land, dissipating on May 27.

The bay is less than deep near the coast, where the sea bottom is covered with gravel, crushed stone and sand. In the center, there is a deep pit called the Baffin Basin, reaching (see depth map), which is mostly covered in silt. Currents form a cyclonic circulation. On the eastern periphery, in summer, the West Greenland Current transports water from the Atlantic Ocean to the North.

The eastward (prograde) jets are found at the transition from zones to belts (going away from the equator), whereas westward (retrograde) jets mark the transition from belts to zones. Such flow velocity patterns mean that the zonal winds decrease in belts and increase in zones from the equator to the pole. Therefore, wind shear in belts is cyclonic, while in zones it is anticyclonic.Vasavada (2005), p.

Hoskyn Reefs is a Closed Ring Reef.William Graham Henderson Maxwell - Atlas of the Great Barrier Reef Elsevier, 1968 The cays occur on planar reefs of various sizes and with various levels of exposure to the prevailing winds. These factors have largely determined cay size and composition, which consists either of shingle, sand, or a mixture of both. Cay stability is profoundly affected by cyclonic disturbance.

Nisarga intensified into a severe cyclonic storm before making landfall near the coastal town of Alibag in Maharashtra at 12:30 (IST) on June 3. At the time, the system was at peak intensity with 3-minute sustained winds of 110 km/h (70 mph) and a central pressure of 984 hPa (29.06 inHg). The cyclone subsequently weakened into a deep depression by June 4.

Cyclonic cleaners do not use filtration bags. Instead, the dust is separated in a detachable cylindrical collection vessel or bin. Air and dust are sucked at high speed into the collection vessel at a direction tangential to the vessel wall, creating a fast-spinning vortex. The dust particles and other debris move to the outside of the vessel by centrifugal force, where they fall due to gravity.

The first filter is intended to trap particles which could damage the subsequent filters that remove fine dust particles. The filters must regularly be cleaned or replaced to ensure that the machine continues to perform efficiently. Since Dyson's success in raising public awareness of cyclonic separation, several other companies have introduced cyclone models. Competing manufacturers include Hoover, Bissell, Shark, Eureka, Electrolux, Filter Queen, etc.

Rockhampton 1966. Taman Shud. Two days out of Lord Howe Island, another cyclonic low pressure system built over Lord Howe Island and the pressure was so deep, the course was changed to Brisbane, Queensland, for safety. On entering the Brisbane River, Cythera received a police escort to their pier, where Peter was questioned about causing a publicity scam since he hadn't arrived in Lord Howe.

The relative humidity is higher between November and January and is lowest throughout June. The city receives an average of 1400 mm of rainfall annually, 68% of which falls during the northeast monsoon. Most of the precipitation occurs in the form of cyclonic storms caused by depressions in the Bay of Bengal during the northeast monsoon. Kanchipuram receives rainfall from both Northeast Monsoon and Southwest Monsoon.

This original design principle was later used for the main span of the Pont de Normandie, a cable-stayed bridge in Normandy, France. The dynamic analysis of the bridge under turbulent cyclonic winds, as well as the revision of the structural project, and the geometry plus stress control of the bridge during erection, were achieved by Alain Chauvin from Sogelerg, using the French "Scanner" computer program.

No bodies or debris of the ship was found. She was assumed to be wrecked in a cyclonic storm in the Arabian Sea. Though the folklores states casualty of 1300 people, there were 746 people (703 passengers and 43 crew members) on board who went missing in the disaster. The other numbers reported are 798, 741 (38 crew member and 703 passengers) and 744.

The cyclone's center moved into north-west Florida early on the morning of March 13, with a significant storm surge in the northwestern Florida peninsula that drowned several people. This initially caused the storm to be a blizzard but also cyclonic. Barometric pressures recorded during the storm were low. Readings of were recorded in Tallahassee, Florida, and even lower readings of were observed in New England.

During the Second World War, large areas of scrub and conifers were cleared to reduce the risk of fire from air-raids. During the cyclonic gale of March 1947, five acres (2 ha) of mature spruce were uprooted. These were replaced with young trees over several years, and helped to alter the ecological balance of the reserve. The wood received SSSI status in 1952.

A low pressure area consolidated into a depression on November 5. It intensified further, prompting the JTWC to issue a TCFA and the IMD to upgrade it into a deep depression. In the following days, the storm's convection flourished as environmental conditions recuperated. By November 8, Megh rapidly intensified into a marginal Extremely Severe Cyclonic Storm, peaking with winds exceeding and a minimum central pressure of .

The northern brickfielder is almost invariably followed by a strong "southerly buster," cloudy and cool from the ocean. The two winds are due to the same cause, viz. a cyclonic system over the Australian Bight. These systems frequently extend inland as a narrow V-shaped depression (the apex northward), bringing the winds from the north on their eastern sides and from the south on their western.

An area of convection formed on November 26 in the eastern Bay of Bengal within an area of moderate wind shear. As the shear decreased, the convection organized about a developing circulation. On November 27, the JTWC classified the system as Tropical Cyclone 07B, and the next day, the IMD classified it as a depression. That day, the agency quickly upgraded it to Cyclonic Storm Baaz.

Tropical Depression 16W formed 205 nautical miles (375 km) east- southeast of Dong Tac Airport, Vietnam on the morning of September 16. It reached Tropical Storm strength overnight local time and was named Vicente, a Chamorro male name. Shortly after forming, Vicente interacted with a tropical disturbance west of Luzon and made a cyclonic loop. Vicente then absorbed the disturbance before passing just south of Hainan Island.

Track of the Muroto typhoon On September 13, 1934, a tropical cyclone developed over the western Caroline Islands. The storm traveled generally northwest, executing a brief cyclonic loop on September 14–15. After a brief stint traveling nearly due north on September 17, the cyclone began recurving to the northeast. It brushed the Ryukyu Islands to the southeast on September 20 as it accelerated northeast.

The gas is forced to swirl downward, then change directions, and return upward in a tighter spiral. The liquid droplets produced capture the pollutants, are eventually thrown to the side walls, and carried out of the collector. The "cleaned" gas leaves through the top of the chamber. The cyclonic spray scrubber (Figure 2) forces the inlet gas up through the chamber from a bottom tangential entry.

A jet mill grinds materials by using a high speed jet of compressed air or inert gas to impact particles into each other. Jet mills can be designed to output particles below a certain size while continuing to mill particles above that size, resulting in a narrow size distribution of the resulting product. Particles leaving the mill can be separated from the gas stream by cyclonic separation.

The cyclone made a small cyclonic loop between October 25 and October 26 as a system over China approached Faye from the northwest. The tropical cyclone accelerated east-northwest, passing just north of Luzon. By October 28, Faye's motion slowed and the system strengthened into a typhoon early on October 29. After passing Okinawa, strong westerly winds aloft caused the typhoon to begin to weaken.

The storm's maximum sustained winds began to migrate closer to the center, and it became a tropical storm on the morning of August 16. Drifting west, Gerald slowly intensified for the next couple days. As Holly developed east of Taiwan, its outflow sheared Gerald, keeping the system from becoming a typhoon. Holly's proximity led to Gerald completing a small cyclonic loop on August 17.

Satellite imagery showed a convective area with some cyclonic turning in connection with a tropical wave over Africa on July 22. The convection gradually diminished as the system moved west-southwest into the Atlantic. On July 31, the wave passed south of Trinidad, where a low-level wind shift was detected. For the next couple of days, this system passed over Venezuela and Colombia.

A tropical wave came off the coast of Africa into the eastern Atlantic Ocean on June 10 and 11. The system moved across the Atlantic and entered into the northeastern Pacific Ocean. The wave became a significant tropical system, with cyclonic turning in the lower and middle layers of the system's cloudiness on June 25. The center of circulation was located south of Acapulco, Mexico.

Cyclonic Storm Maarutha was the first tropical cyclone of the 2017 North Indian Ocean cyclone season. It was a relatively short-lived and weak system, but it was the first to make landfall in Myanmar in April. Although a weak system, it caused notable damage in Myanmar. Maarutha formed from an area of low pressure over the southern Bay of Bengal on April 15.

A nearby buoy reported a barometric pressure of , which confirmed the increasing organization. At 03:00 UTC on November 1, the IMD upgraded the depression to a deep depression, and 24 hours later to Cyclonic Storm Keila. By that time, the agency estimated peak 3 minute sustained winds of 65 km/h (40 mph) while the storm was just 150 km (95 mi) southeast of Oman.

The Navy reconnaissance squadron flew into the system later that day, and reported a storm of full hurricane strength moving southward. Receiving the name Able, the small hurricane turned to the southeast and to the east while passing near or over the Bahama Banks. Able subsequently turned to the northeast and later to the north, and finished executing its cyclonic loop on May 20.

The Kaiadilt managed to return to Sweers only on McKenzie's departure. The massacre was only recorded by researchers in the 1980s. Sweers Island was declared an Aboriginal reserve in 1934. After a cyclonic tidal surge swept the area in 1948, which followed fast on the severe drought that struck in 1946, the Kaiadilt were transferred by missionaries and the Queensland Government to Mornington Island.

Tropical Depression 16W formed 205 nautical miles (375 km) east-southeast of Dong Tac Airport, Vietnam on the morning of 16 September. It reached tropical storm strength overnight local time and was named Vicente, a Chamorro male name. Shortly after forming, Vicente interacted with a tropical disturbance west of Luzon and made a cyclonic loop. Vicente then absorbed the disturbance before passing just south of Hainan Island.

The NMC does not only issue full bulletins for tropical cyclones over the northwest Pacific Ocean and the South China Sea. For the Belt and Road as well as the remnants which could impact Tibet and Yunnan occasionally, the NMC started to issue full bulletins for cyclonic storms over the north Indian Ocean (except the Gulf of Aden) on an exclusive page since late 2017.

Although storms rarely strike Yemen, back-to-back cyclones Chapala and Megh hit the country one week apart in November 2015. The country has two recorded landfalls by severe cyclonic storms – tropical cyclones with winds of at least . The first was a storm in May 1960, and the other was Cyclone Chapala in 2015, the latter being the second-strongest cyclone on record in the Arabian Sea.

The storm gradually intensified as it moved towards the northwest. Dvorak satellite intensity estimates on June 6 reached T4.0, corresponding to an intensity of 120 km/h (75 mph). The IMD also marked the increase in intensity, upgrading ARB 02 to a severe cyclonic storm. Around this time, the storm began to turn towards the north and accelerate due to an approaching mid-level trough.

Invest 93L on August 28, 2017 which later became Hurricane Irma. Note the cyclonic shape. An invest in meteorology (short for investigative area, alternatively written INVEST) is a designated area of disturbed weather that is being monitored for potential tropical cyclone development. Invests are designated by three separate United States forecast centers: the National Hurricane Center, the Central Pacific Hurricane Center, and the Joint Typhoon Warning Center.

A large mid-latitude low-pressure area offshore Atlantic Canada and the circulation associated with Hurricane Irma resulted in the collapse of steering currents, causing Jose to decelerate and execute a cyclonic loop. While executing the cyclonic loop, Jose briefly weakened to a tropical storm early on September 15, before re-intensifying into a hurricane about 18 hours later. By September 16, the system curved northward along the western periphery of a central Atlantic ridge. Remaining well offshore the East Coast of the United States, Jose re-intensified slightly further, attaining a secondary peak intensity as a high-end Category 1 hurricane with winds of around 12:00 UTC on September 17. After passing north of the Gulf Stream, the cyclone encountered colder ocean temperatures and increasing wind shear, causing it to weaken to a tropical storm by 12:00 UTC on September 19.

During the next day, the IMD reported that the depression had intensified into a Deep Depression, before later that day reporting that it had intensified into Cyclonic Storm Thane. As it was named, Thane started to turn towards the west under the influence of a subtropical ridge of high pressure before its development slowed as strong outflow and marginally favourable sea surface temperatures fought with persistent easterly vertical wind shear. Early on December 28, the JTWC reported that Thane had become the equivalent to a category one hurricane on the SSHS before later that day the IMD reported that Thane had become the first Very Severe Cyclonic Storm of the season. During December 28, Thane continued to intensify, and developed a small pinhole eye, before the JTWC reported that Thane had attained its peak intensity early on December 29 with 1-minute sustained wind speeds of 165 km/h (105 mph).

Over the next few days, it moved westwards within an area of low to moderate vertical wind shear, before as it passed over the Malay Peninsula, it moved out of the Western Pacific Basin on October 6. It emerged into the Andaman Sea during the next day and moved west- northwest into an improving environment for further development before the system was named Phailin on October 9, after it had developed into a cyclonic storm and passed over the Andaman and Nicobar Islands into the Bay of Bengal. During the next day, Phailin intensified rapidly and became a very severe cyclonic storm on October 10, equivalent to a Category 1 hurricane on the Saffir–Simpson hurricane wind scale (SSHWS). On October 11, the system became equivalent to a Category 5 hurricane on the SSHWS, before it started to weaken during the next day, as it approached the Indian state of Odisha.

The effects of climate change on South Asia include steady sea level rise, increased cyclonic activity, and changes in ambient temperature and precipitation patterns. Increased landslides and flooding are projected to have an impact on states such as Assam. Ongoing sea level rises have already submerged several low-lying islands in the Sundarbans, displacing thousands of people. The first among the countries to be affected by severe climate change is Bangladesh.

At 0700 UTC on April 29, Mala made landfall just south of Thandwe in Myanmar's Rakhine State as a very severe cyclonic storm. The JTWC estimated winds at this time to have been 165 km/h (105 mph). Rapid weakening ensued once the cyclone moved onshore. Within 12 hours of landfall, Mala weakened to a deep depression and was last noted as a dissipating system earl on April 30.

Early on September 22, the storm turned eastward and gradually weakened to a tropical storm the next day. It then executed a large cyclonic loop, until curving northward on September 25\. Early on the following day, Esther struck Cape Cod, hours before emerging into the Gulf of Maine. Later on September 26, the storm made landfall in southeastern Maine, before weakening to a tropical depression and becoming extratropical over southeastern Quebec.

The film was released in 1955 and received mainly positive reviews from critics. According to The Indian Express, the film is a "faithful and memorable documentation feature" on Swami Vivekananda. T. M. Ramachandran, wrote in his book 70 years of Indian cinema, 1913-1983, that the film "will ever remain enshrined in the memories of the viewers. The film brought to graphic view the exploits of this cyclonic sage of India".

The season was fairly active, with ten depressions forming from May to November. The India Meteorological Department designated four of these as cyclonic storms, which have maximum sustained winds of at least 65 km/h (40 mph) averaged over three minutes. The Joint Typhoon Warning Center also issued warnings for five of the storms on an unofficial basis. In early May, two tropical storms formed on opposite sides of India.

On May 10, a depression formed in the central Bay of Bengal, and within a few days became a very severe cyclonic storm. After it stalled, it drew moisture from the southwest to produce severe flooding across Sri Lanka, killing 254 people and becoming the worst floods there since 1947. Damage on the island totaled $135 million (2003 USD). The storm eventually made landfall in Myanmar on May 19\.

Tropical cyclones typically form over large bodies of relatively warm water. They derive their energy through the evaporation of water from the ocean surface, which ultimately recondenses into clouds and rain when moist air rises and cools to saturation. This energy source differs from that of mid-latitude cyclonic storms, such as nor'easters and European windstorms, which are fueled primarily by horizontal temperature contrasts. Tropical cyclones are typically between in diameter.

A cross-Section of a Three body spike from an Anti-Cyclonic Thunderstorm. The spike is the boxed areas to the left. Because of their observed accuracy in indicating large hail aloft, TBSS's are used operationally by the National Weather Service to identify thunderstorms that could likely produce large, severe hail. This would warrant the issuance of a severe thunderstorm warning or mention of large hail in a tornado warning.

The disturbance can grow into a wave-like formation along the front and the low is positioned at the crest. Around the low, the flow becomes cyclonic. This rotational flow moves polar air towards the equator on the west side of the low, while warm air move towards the pole on the east side. A cold front appears on the west side, while a warm front forms on the east side.

A mesocyclone is a vortex of air, to in diameter (the mesoscale of meteorology), within a convective storm. Air rises and rotates around a vertical axis, usually in the same direction as low-pressure systems in both northern and southern hemisphere. They are most often cyclonic, that is, associated with a localized low-pressure region within a supercell. Such storms can feature strong surface winds and severe hail.

Cyclone on Mars, imaged by the Hubble Space Telescope Cyclones are not unique to Earth. Cyclonic storms are common on Jovian planets, such as the Small Dark Spot on Neptune. It is about one third the diameter of the Great Dark Spot and received the nickname "Wizard's Eye" because it looks like an eye. This appearance is caused by a white cloud in the middle of the Wizard's Eye.

The depression moved northward and merged with another frontal system on the following day. A tropical wave developed into a tropical depression south of the Capo Verde Islands on September 15\. The depression tracked slowly west-northwestward for several days, before turning northeastward on September 23\. Thereafter, the depression began moving erratically, with multiple small cyclonic loops from September 24 to September 28, before curving northward and then northeastward.

It continued on this path until it made a cyclonic loop beginning on October 17 while becoming extratropical. The storm lost its identity on October 21. The hurricane caused wave damage to coastal areas, but primarily posed a threat to the shipping lanes of the North Atlantic. Offshore, a sailboat with six crewmen on it became disabled due to high waves, estimated to have exceeded , produced by the hurricane.

Cum sole is a Latin phrase meaning with the sun. The term is sometimes used in meteorology and physical oceanography to refer to anticyclonic motion, which is clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere (but with the sun's apparent motion when facing Equator in both hemispheres) (Pond and Pickard, 1983). The opposite of Cum sole is Contra solem (cyclonic motion). Both terms are infrequently used.

A zonal flow regime. Note the dominant west-to-east flow as shown in the 500 hPa height pattern. A February 24, 2007 radar image of a large extratropical cyclonic storm system at its peak over the central United States. Extratropical cyclones are generally driven, or "steered", by deep westerly winds in a general west to east motion across both the Northern and Southern hemispheres of the Earth.

The inflow of freshwater, representing a third of the freshwater volume flowing into the Mediterranean, makes the Adriatic a dilution basin for the Mediterranean Sea. The Middle and South Adriatic Gyres (SAG), are significant cyclonic circulation features, with the former being intermittent and the latter permanent. The SAG measures in diameter. It contributes to the flow of bottom water from the Adriatic to the Levantine Basin through the Ionian Sea.

The East Madagascar Current is an oceanic flow feature near Madagascar. It flows southward from 20°S on the east side of Madagascar to the southern limit at Cape Saint Marie and subsequently feeds the Agulhas Current. Its flow is complicated by large cyclonic and anticyclonic eddies. The East Madagascar Current has a controlling role in the western boundary current of the southwest Indian Ocean together with the Mozambique Current.

Shortly thereafter, the depression strengthened into a subtropical storm. By early on August 23, the storm had intensified and acquired enough tropical characteristics to be re-classified as Hurricane Charley. At 1200 UTC on August 23, Charley attained its peak intensity with winds of 80 mph (130 km/h) and a minimum pressure of . Following peak intensity, Charley completed a cyclonic loop and began weakening as it headed almost due-east.

The storm turned eastward early on the following day, and rapidly weakened to a tropical storm. Esther then executed a large cyclonic loop, until curving northward on September 25\. Early on the following day, Esther struck Cape Cod, hours before emerging into the Gulf of Maine. Later on September 26, the storm made landfall in southeastern Maine, before weakening to a tropical depression and becoming extratropical over southeastern Quebec.

The 1996 Lake Huron Cyclone, commonly referred to as Hurricane Huron, Cyclone Huron, or the Lake Huron Subtropical Cyclone of 1996, was a strong cyclonic storm system that developed over Lake Huron in September 1996. The system resembled a subtropical cyclone at its peak, having some characteristics of a tropical cyclone. It was the first time such a storm has ever been recorded over the Great Lakes region.

Early on 26 November, the IMD upgraded Lehar to a Very Severe Cyclonic storm. Meanwhile, they have warned the coastal districts of Andhra Pradesh and Odisha of heavy rainfall and strong winds. Animation of Lehar crossing the coast of India Under the steering influence of the subtropical ridge, Lehar continued to track in a west-northwesterly direction. The storm maintained a peak 1-minute average sustained windspeed of .

Later that morning RSMC New Delhi designated the disturbance as Depression BOB 02. The Cyclone crossed the West Bengal coast close to the east of Sagar Island between 0800 & 0900 UTC as a severe cyclonic storm on 25 May. A maximum wind gust of 112 km/h was recorded in Kalaikunda in West Bengal. Singlabazar recorded 320 mm of rainfall in 48 hours between 26 and 27 May.

For several days in November, a trough was present across the west-central Atlantic Ocean. On November 10, three ships reported a cyclonic circulation northeast of Bermuda, with peak winds of . It was a large system, and would likely have been classified a subtropical cyclone in the satellite era. The storm moved northeastward and weakened, degenerating into a trough on November 12 before being merging with another system.

The Dyson Root Cyclone technology is used in all Dyson vacuum cleaners from DC07 onward. The DC17, DC22, and DC23 use the improved "Root Cyclone & Core Separator", also called "Radix Cyclone", "Intermediary Cyclone", or "Level 3 Root Cyclone Technology". Most of the current range use "2 Tier Radial cyclones", consisting of two cascaded levels of cyclonic separators to remove dirt and dust without requiring a bag or filter.

On October 6, a low-pressure area formed in the Andaman Sea. Over the next two days, the disaster entered the Bay of Bengal and became a depression on October 8, receiving the designation BOB 08 from the IMD. Afterward, the storm rapidly strengthened, becoming a Very Severe Cyclonic Storm on October 9, with the strength of a Category 2 hurricane on the Saffir–Simpson scale (SSHWS). Between 4:30 a.m.

Around the same time, the IMD had announced that the system intensified into a depression. Over the next 24 hours, the depression continued to drift further northwestwards into warm waters and faced low vertical wind shear. As a result, it continued to intensify and the JTWC began tracking it as a tropical storm. Subsequently, the IMD upgraded it to a deep depression and Cyclonic Storm Mekunu later the same day.

On 27 September 1952 Bishop Hudson finally dedicated the stone church, 40 years after construction had commenced. St David's Church suffered structural damage to its sanctuary during a cyclonic storm in 1979. In the same year a building fund was established to construct a vestry. In 1980 a cruciform design was accepted, with small transepts to accommodate a vestry to the north and a chapel to the south of the crossing.

Average annual precipitation is about 54.8 inches. October to January are the wettest months due to especially frequent and intense mid-latitude cyclonic storms, while May to July represent markedly drier months; thunderstorms, common in mid-latitude continental areas, are virtually unknown here. November is the average wettest month, while July is the average driest month. Average snowfall is 100 inches, falling primarily on the upper reaches of the volcanoes.

Nebulizers work best with simple liquid samples (i.e. solutions). However, there have been instances of their use with more complex materials like a slurry. Many varieties of nebulizers have been coupled to ICP-MS, including pneumatic, cross-flow, Babington, ultrasonic, and desolvating types. The aerosol generated is often treated to limit it to only smallest droplets, commonly by means of a Peltier cooled double pass or cyclonic spray chamber.

The Meghna includes the accumulated waters of the Brahmaputra and Ganges. It flows along the eastern boundary of the district in a southerly direction until it flows into the Bay of Bengal. During the latter part of its course the river expands into a large estuary containing many islands, the largest one being Dakshin Shahbazpur. The islands on the seafront are regularly exposed to devastation by cyclonic storm-waves.

Located beneath the axis of an upper-level ridge, the depression was able to intensify and organize more, with prominent outflow developing. On 5 November, the IMD upgraded the system to a deep depression and later to a cyclonic storm. At 06:00 UTC on the same day, the JTWC upgraded the storm to the equivalent of a minimal hurricane, estimating 1 minute winds of 120 km/h (75 mph).

The 2016 North Indian Ocean cyclone season was an event in the annual cycle of tropical cyclone formation. It was the deadliest season since 2010, killing more than 400 people. The season was an average one, seeing four named storms, with one further intensifying into a very severe cyclonic storm. The first named storm, Roanu, developed on 19 May while the season's last named storm, Vardah, dissipated on 18 December.

CDW transport onto the shelf is known to be persistent and periodic, and is thought to occur at specific locations influenced by bottom topography. The circulation of the Ross Sea is dominated by a wind-driven gyre. The flow is strongly influenced by three submarine ridges that run from southwest to northeast. Flow over the shelf below the surface layer consists of two anticyclonic gyres connected by a central cyclonic flow.

Later on September 5, an offshoot of Gladys with cyclonic turning formed in the northern Gulf of Mexico and struck Texas on September 6; it may have been a separate tropical cyclone. Initially, Gladys headed north-northwestward, but then re-curved south- southwestward while approaching the Gulf Coast of Mexico. Early on September 6, it made landfall near Tampico, Tamaulipas as a weakening tropical storm. The system rapidly dissipated inland.

A tropical wave emerged into the eastern Atlantic on June 13\. Tracking westward, the disturbance remained disorganized prior to reaching the western Caribbean. Cyclonic rotation became increasingly evident on satellite imagery, though organization was halted by the disturbance's passage over the Yucatán Peninsula on June 26\. After emerging into the Bay of Campeche, favorable environmental conditions allowed for the development of Tropical Storm Arlene by 18:00 UTC on June 28\.

By then, "miniature" supercell thunderstorms began approaching the coastline. Data from Doppler weather radar indicated mesocyclones within several of the cells, though mostly while over water. At the onset of the outbreak, three cells exhibited signature characteristics of supercell thunderstorms: cyclonic updraft and a hook-like appendage. Similar to storms over the Great Plains, a mid-level rear flank downdraft was present; however, this feature did not reach the surface.

On December 12, Vardah weakened into a Severe Cyclonic Storm, before making landfall over the eastern coast of India, close to Chennai, Tamil Nadu, with winds of . Afterward, it rapidly weakened into a depression, due to land interaction, on 13 December. The depression caused overnight rainfall in Southern Karnataka on December 13. Due to land interaction, Vardah degenerated into a well-marked low on December 13, at around midday, local time.

A low pressure area formed over the Arabian Sea on October 26. It slowly consolidated, prompting the IMD to classify it a depression on October 28. Later the same day, the JTWC issued its Tropical Cyclone Formation Alert (TCFA) for the system, and the IMD upgraded the storm to deep depression intensity. Further intensification ensued, causing the IMD to upgrade the system to a cyclonic storm, naming it Chapala.

On October 8, while Hudhud was gaining cyclonic storm intensity, the authorities closed schools and cancelled ferry services in and around the Andaman Islands.Local fishermen were warned about the storm. The Andaman Trunk Road, one of the major roads traversing the island, was shut down after trees were uprooted due to the storm's force. Landslides were reported on the island, causing some power and communication lines to fail.

The sense of rotation of these currents may either be cyclonic or anticyclonic (such as Haida Eddies). Oceanic eddies are also usually made of water masses that are different from those outside the eddy. That is, the water within an eddy usually has different temperature and salinity characteristics to the water outside the eddy. There is a direct link between the water mass properties of an eddy and its rotation.

Developing at the southern end of a shear line, a low level circulation formed on September 13 with increasing convective organization to the south of a cold core cyclone. Completing a cyclonic loop, the cyclone continued to develop despite cool air becoming entrained within its circulation. Approaching the upper level low, Kelly slowed down its northward motion and reached its maximum intensity. Soon afterwards, it rapidly accelerated northeast.

One month after Sally dissipated, the first typhoon of the season formed from a closed cyclonic circulation south of Chuuk. The circulation drifted westward, and reports from the surface showed intensification. On April 14 a reconnaissance aircraft mission estimated winds of tropical storm force, and the third tropical storm of the season was named Tilda. Tilda slowly moved northwest on April 15 as it intensified into a typhoon.

The slope of the valley is from north to south. The mountain ranges create a moderated climate, preventing the cold winds from the north from reaching the valley and barring cyclonic storms. The state is bordered by the Indian states of Nagaland to its north, Mizoram to its south, Assam to its west, and shares an international border with Myanmar to its east. A tree amid Manipur hills.

As the eddies migrate, their physical properties change as they mix with the surrounding water. In the Gulf Stream, migrating eddies are known as anticyclonic or cyclonic eddies based on the direction in which they spin (clockwise vs. counter-clockwise). The two eddies differ in motion, physical properties, and, consequently, their effects on biology and chemistry of the ocean. The Coriolis force combined with high velocity currents drive eddy motion.

It is said that Theodosius was visited by two "heavenly riders all in white" who gave him courage. The next day, the battle began again and Theodosius's forces were aided by a natural phenomenon known as the Bora, which produces cyclonic winds. The Bora blew directly against the forces of Eugenius and disrupted the line. Eugenius's camp was stormed; Arbogast committed suicide and Eugenius was captured and soon after executed.

Later that day, it was upgraded to Tropical Storm Bonnie and it began to move slowly to the northeast. Like most storms that develop in higher latitudes, Bonnie was embedded in a larger-scale cyclonic circulation at first, which minimized shear (allowing it to develop) and provided weak steering currents. The low shear allowed Bonnie to rapidly develop and a small but well-defined eye formed late that morning.

It also affected neighboring Karachi in Pakistan. A strong monsoon surge prevented formation of systems until a deep depression formed over West Bengal in October and caused heavy rainfall. A couple of depression formed between mid October and November which continued the rain spell causing destruction of life and property. Very Severe Cyclonic Storm Ockhi formed in early December and wreaked havoc in the countries where it impacted.

Sun control was effected within the building by recessed wall surfaces broken by piers and horizontal metal sun hood spaced to promote convectional air flow. Mechanical ventilation equipment was installed within the roof space under a curved ridge line. This innovative roof profile, which was apparently a casualty of an on-site design change, was a response to cyclonic wind speeds, and anchored down to reinforced concrete perimeter beams.

The IMD upgraded it to a cyclonic storm on October 14, estimating peak 3 minute winds of 85 km/h (50 mph). The JTWC assessed slightly higher 1 minute winds of 95 km/h (60 mph). Increased wind shear stripped away the convection, causing the storm to weaken. By October 17, the system deteriorated into a depression and began drifting to the southwest, having moved between two ridges.

The Kamayani Express, which was headed to Varanasi on the down line, derailed as flash floods (caused by Cyclonic Storm Komen) dislodged a culvert near the Machak river, causing track misalignment. The derailment resulted in some coaches becoming submerged in the river and some coaches blocking the up line. The Janata Express derailed near the same spot soon after. At least 31 people died and 100 people were injured.

During 6 May, the system started to move more towards the north-west because of a weakness in the subtropical ridge, as it continued to intensify and became a Very Severe Cyclonic Storm. This turn towards the northwest turned out to be more northerly than had been expected, which as a result allowed the system to stay offshore for longer than had been expected by the JTWC. Over the next couple of days the system rapidly intensified before the JTWC reported early on 8 May, that the system had peaked with 1-minute sustained windspeeds of 230 km/h (145 mph), which made the system equivalent to a category 4 hurricane on the Saffir–Simpson hurricane wind scale. At around the same time the IMD also reported that the cyclone had peaked as a Super Cyclonic Storm, with 3-minute sustained wind speeds of 235 km/h (145 mph) and an estimated central pressure of .

On May 4, the IMD reported that a tropical depression had developed over the Bay of Bengal, about to the southeast of Chennai, India. During that day the system gradually developed further as it moved westwards under the influence of the subtropical ridge of high pressure. The depression subsequently became a cyclonic storm early on May 5, before the JTWC initiated advisories on the system and designated it as Tropical Cyclone 02B later that day. The system subsequently started to move north-westwards because of a weakness in the subtropical ridge, as it continued to intensify and became a very severe cyclonic storm during May 6. Over the next couple of days the system rapidly intensified before the JTWC reported early on May 8, that the system had peaked with 1-minute sustained windspeeds of 230 km/h (145 mph), which made the system equivalent to a category 4 hurricane on the Saffir–Simpson hurricane wind scale.

A tropical wave crossed the west coast of Africa on June 20\. As the wave moved into the western Caribbean Sea on June 30, a broad cyclonic turning was noted. The system moved over the Yucatán Peninsula on July 1, a day before emerging into the Bay of Campeche as a weak low pressure area. Later on July 2, deep convection became more organized while the system was centered over the southwestern Gulf of Mexico.

A tropical wave crossed the Africa coast and entered the Atlantic Ocean on September 5\. It tracked westward for several days, until curving northwestward in the Caribbean Sea near the coast of South America. By September 16, the system entered the Gulf of Mexico and quickly developed into Tropical Depression Eight on September 17\. The depression executed a cyclonic loop, first heading west-southwest, then south, before curving northeast and finally northward.

The bridge is located in a cyclonic area where the wind speed touch per hour. The bridge is located in two channels, the Kovvur channel and the Rajahmundry channel, and hence the bridge is also known as the Kovvur-Rajahmundry Bridge. The Rajahmundry channel has a deep rocky bed, and even the water level is . Comparatively the Kovur channel is shallow with a water depth of about and riverbed is made up of clay deposits.

The superstructure of the bridge is of the bow-string girder type. While designing, the projected speed for the trains was taken as 160 km per hour. Taking into consideration the cyclonic conditions, the wind speed considered without live load was per hour, and with dead load the speed considered was per hour. As the location of the bridge is in the Seismic Zone I, seismic load has not been accounted for in the design.

Throughout the remainder of September 9, the hurricane executed three distinct cyclonic loops while maintaining a general westward motion. During the afternoon hours, Dora passed over the Gulf Stream, resulting in its central pressure decreasing 9 mbar (hPa; 0.27 inHg) in a few hours. Around 12:20 a.m. EST on September 10, Hurricane Dora made landfall about north of St. Augustine, Florida, with sustained winds between 115 and 125 mph (185 and 205 km/h).

The 2012 North Indian Ocean cyclone season was an event in the annual cycle of tropical cyclone formation. The season had a late start, with the first system forming in October. During the season, only five systems formed, of which only two became cyclonic storms. Both the storms made landfall, and they, along with the deep depressions, were responsible for 128 deaths and economic losses worth at least $56.7 million (2012 USD).

Seiches have been observed in seas such as the Adriatic Sea and the Baltic Sea. This results in the flooding of Venice and St. Petersburg, respectively, as both cities are constructed on former marshland. In St. Petersburg, seiche-induced flooding is common along the Neva River in the autumn. The seiche is driven by a low pressure region in the North Atlantic moving onshore, giving rise to cyclonic lows on the Baltic Sea.

Hurricane Stan originated from a tropical wave that was first identified by the National Hurricane Center (NHC) off the west coast of Africa on September 17, 2005. Traveling westward, the wave remained weak, barely being notable. By September 22 convection began to increase; however, wind shear in the region prevented this development from continuing. The system entered the Caribbean Sea several days later, a region with more favorable conditions for cyclonic development.

A tropical disturbance formed in the Gulf of Tehuantepec on July 11. The system moved across the Gulf of Tehuantepec 9 mph (14 km/h) and gradually intensified. By late on July 14, satellites indicated a cyclonic circulation; the disturbance was promptly classified as Tropical Depression Four while west of Acapulco, Guerrero, Mexico. As the depression moved over sea surface temperatures (SST's) of , it rapidly intensified into Tropical Storm Carlos early on July 15.

The hurricane originated from a "cyclonic perturbation" near Barbados on October 4, as reported by local newspapers. On October 5, no closed circulation was evident in the system. In Colón, Panama, a report was sent to the Weather Bureau, reporting sinking barometric pressures on October 6. It was recognized as a tropical storm early on October 8, with winds of 40 mph (65 km/h), while located in the southwestern Caribbean Sea.

This basin is divided in two seas by India, the Bay of Bengal and Arabian Sea, abbreviated BOB and ARB, respectively. Although an inactive year, 2006 had more of note than previous years like 2005 or 2004. Cyclone Mala caused severe damage and killed 22 when it hit Burma as a cat. 3. An unnamed depression killed over 100 in India, and cyclonic storm Ogni caused minor effects in India as well.

In rare cases, a warm-core cyclone can develop in its associated convective activity, resulting in a tropical cyclone and a weakening and southwest movement of the nearby upper tropospheric cyclonic vortex. Symbiotic relationships can exist between tropical cyclones and the upper level lows in their wake, with the two systems occasionally leading to their mutual strengthening. When they move over land during the warm season, an increase in monsoon rains occurs.

The North Indian Ocean tropical cyclone basin is located to the north of the Equator, and encompasses the Bay of Bengal and the Arabian Sea, between the Malay Peninsula and the Arabian Peninsula. The basin is officially monitored by the India Meteorological Department's Regional Specialized Meteorological Centre in New Delhi. Within the basin an extremely severe cyclonic storm is defined as a tropical cyclone that has 3-minute mean maximum sustained wind speeds between .

The outlook has changed, as scientists have begun to have a better understanding of this habitat. Although fairly high rates of primary production are maintained through rapid recycling of nutrients, physical processes such as internal waves and tides, cyclonic mesoscale eddies, wind- driven Ekman pumping, and atmospheric storms may carry in new nutrients.Nicholson et al., 2008 Nutrients that do not get used up on the surface will eventually sink down and nourish the seafloor habitat.

Mandora Marsh has formed over thousands of years on what used to be the lower reaches and estuary of an ancient river. The main features are two large lakes which are flooded after heavy cyclonic rainfall. The westernmost Lake Walyarta is a claypan that extends eastwards about 30 km from the inland side of the Great Northern Highway. Although its width may reach 5 km, the depth of water never exceeds 2 m.

Climate models are used to study expected future changes in cyclonic activity. Lower-resolution climate models cannot represent convection directly, and instead use parametrizations to approximate the smaller scale processes. This poses difficulties for tropical cyclones, as convection is an essential part of tropical cyclone physics. Higher-resolution global models and regional climate models may be more computer-intensive to run, making it difficult to simulate enough tropical cyclones for robust statistical analysis.

Typhoon Owen formed from a tropical disturbance which was originally identified within a near-equatorial trough over Micronesia. The disturbance was first mentioned by the Joint Typhoon Warning Center on March 29. By March 31, a distinct area within the trough showing signs of cyclonic spin appeared, and the JTWC initiated advisories on Tropical Depression 02W soon afterwards. Meanwhile, the Japan Meteorological Agency classified the system as a tropical storm, Tropical Storm 9401.

The water masses of the SMACC have high salinities characteristic of Subtropical Surface Waters. Driven by wind stress curl, the SMACC flows faster in summer and is reduced in winter, maintaining an average speed of 20 cm/s. Its average volume transport is about 1.3 Sverdrup with a mean summer maximum of 2.1 Sverdrup. Cyclonic eddies generated at the south of Madagascar could also contribute to the intensification of the downstream of the SMACC.

On November 14, an area of low pressure formed to the west of Lakshadweep. Tracking generally westward, it eventually developed into a depression three days later. Gradual intensification took place over the following two days, with the system becoming a cyclonic storm on November 19\. On November 20, the system attained its peak intensity with winds of 75 km/h (45 mph) and a minimum pressure of 994 mbar (hPa; 29.36 inHg).

The latte stone houses built length wise were narrow with a rising roof with long rafters. The rafters were extended to the ground level and buried in the ground as a protection against cyclonic winds. Hardwood (of ifil or seeded breadfruit trees or palo maria) formed the main framework of the houses with woven palm leaves covering the sides. The flooring was made of wood from betel nut trees or of split bamboo.

Based on satellite imagery, it was estimated that the storm had peak winds of 240 km/h (150 mph), with gusts as high as 280 km/h (175 mph). This ranked the system as a modern-day super cyclonic storm. Weakening somewhat, the system continued westward, moving over Tamil Nadu, before rapidly weakening. The system degenerated into a remnant low after emerging over the Arabian Sea on December 24 and dissipated two days later.

The atomic hydrogen is detected mostly within the limits of the optical disc but also extends one and a half times the radius of the optical disk. The hydrogen forms streaming motions near the spiral arms. The gas features two anticyclonic and four cyclonic vortices, rotating with the spiral pattern. The anticyclones are caused by the differential rotation and the cyclones are the result of a high amplitude in the density wave.

On May 14, the IMD upgraded it to a deep depression, and six hours later it was designated the first cyclonic storm of the season, Akash. Akash continued to strengthen and the JTWC analysed it as having reached hurricane-force winds on May 14. It made landfall on the coast near the Bangladesh–Myanmar border early on May 15, and weakened quickly inland. The name, contributed by India, means "sky" in Hindi.

Hurricane Joan strengthened into a major hurricane on October 19 while drifting westward. The hurricane executed a tight cyclonic loop in which it weakened greatly but rapidly strengthened upon resuming its westward track. Joan reached its peak intensity just before making landfall near Bluefields, Nicaragua, on October 22 as a Category 4 hurricane. Joan at the time was the southernmost Category 4 hurricane ever recorded, but this record has since been broken by Hurricane Ivan.

The crushed oil shale is dried in the fluidized bed drier (aerofountain drier) by contact with hot gases. After drying and pre-heating to , oil shale particles are separated from gases by cyclonic separation. Oil shale is transported to the mixer chamber, where it is mixed with hot ash of , produced by combustion of spent oil shale in a separate furnace. The ratio of oil shale ash to raw oil shale is 2.8–3:1.

After peak intensity, the storm began to move erratically, executing multiple cyclonic loops and decelerating between 20 February and 25 February. At that time, Kerry weakened significantly due to dry air, falling to Category 3 on 21 February and Category 2 on 24 February. The storm curved southwestward by 26 February and deteriorated to a Category 1 later that day. Shortly thereafter, Kerry turned westward and began approaching the east coast of Queensland.

Since the Western Disturbance depression moves eastward (and is the reason for cyclonic occurrences in Eastern Coastal areas) by this time of the year, there is no moisture-laden wind to increase humidity. The air therefore remains dry or very dry during day. For most of its summer season, Delhi has a semi-arid climate. Coming from Spring, the city witnesses a spurt in day temperature around early April, whereas nights still remain pleasant.

Surface analysis indicated that the cyclone had multiple circulations, with a weaker cyclonic circulation persisting over the eastern shore of Lake Huron and another center north of Lake Ontario. During this 12-hour period, the cyclone decayed rapidly, mainly in the lower troposphere. Twelve-hour cloud height rises also occurred, ranging from 66–197 feet (20–60 m). On September 15, the cyclone weakened into a remnant low and left Lake Huron, dissipating soon afterward.

It was initially assigned the code BOB 07. Early the next day, the IMD reported that BOB 07 had reached deep depression status, and immediately afterwards, they upgraded BOB 07 into a cyclonic storm, naming it Lehar. Being located in an area of moderate vertical wind shear of around , convection gradually consolidated around the LLCC, though being slightly displaced towards the northwest. Later that day, Lehar developed a weak microwave eye-like feature.

The next day, it was absorbed into another front. On October 10, an area of disturbed weather existed in the vicinity of the United States Virgin Islands. Cyclonic flow existed on the northern side of this feature, but only one ship recorded westerly winds south of the center, and the data from that ship is questioned. A tropical depression may have existed from October 11–12 before it dissipated the next day.

Despite being inland, the depression intensified into Tropical Storm Julia over Jacksonville and peaked with winds of 50 mph (85 km/h) shortly thereafter. The cyclone drifted north-northwestward and then northeastward, moving offshore the Southeastern United States on September 14 under a weak steering regime. A cyclonic loop occurred as strong westerly air developed in the region. The shear caused fluctuations in intensity, while there were bursts of convection around the disorganized center.

This sheltered region allows water parcels to remain on the inshore side for a relatively longer period of time. The longer retention time means marine organisms can remain over the bank longer, increasing the risk of hypoxia and aquatic invasive species establishment. In the southern sheltered region of the bank, a northward flow is often observed because of the cyclonic movement of the flow as it adjusts to the deepening water column.

The climate of the area is affected by easterly-moving cyclonic depressions of the Southern Ocean. These depressions make the weather relatively mild; bring strong northerly winds and a heavy cloud cover to the region. The climate is also characterized by continental north to northwesterly flow of cold anticyclone air from the West Antarctic Ice Sheet. This flow brings clear, cold and stable conditions, relatively light winds from the south, and negative temperatures.

2 of those depressions strengthened into deep depressions, and both of those storms intensified further into Cyclonic Storms. The first depression of the season developed out of the remnants of Severe Tropical Storm Gaemi on October 10, 2012, very late into the 2012 cyclone season, about southeast of Kolkata, West Bengal. The depression brought high winds and heavy rains to much of Bangladesh, causing extensive damage. The storm killed a total of 30 people.

Favorable upper-level conditions and good outflow allowed the storm to intensify. Shortly after, the cyclone attained tropical storm-force winds and turned towards the northeast. While gradually increasing in forward motion, the storm continued to strengthen. The IMD eventually upgraded the system to a cyclonic storm on May 16. On May 17, the cyclone attained winds of 120 km/h (75 mph), equivalent to a Category 1 hurricane on the Saffir-Simpson Hurricane Scale.

Low amounts of wind shear are needed, as high shear is disruptive to the storm's circulation. Lastly, a formative tropical cyclone needs a pre- existing system of disturbed weather, although without a circulation no cyclonic development will take place. Mesocyclones form as warm core cyclones over land, and can lead to tornado formation. Waterspouts can also form from mesocyclones, but more often develop from environments of high instability and low vertical wind shear.

Early on October 27, Kyarr intensified into a super cyclonic storm, becoming the first one in the basin since Gonu in 2007. The system continued to intensify, attaining maximum three-minute sustained winds of 240 km/h (150 mph) and a minimum barometric pressure of 922 hPa (27.23 inHg), Kyarr began slowly weakening on October 29 as it headed southwest towards the direction of Somalia. Kyarr dissipated off the coast of Somalia on November 1.

It was the second Severe Cyclonic Storm to make landfall in West Bengal after Cyclone Aila. The storm produced heavy rain over many parts of West Bengal with Digha receiving 98 mm, Kolkata receiving 101 mm, Halisahar recording 95 mm and Dumdum receiving 90 mm of rain. Strong winds were also reported in many parts of South Bengal. Strong winds of 75 km/h also battered the Kolkata by uprooting many trees.

Typhoon Haikui, although centred far away from the Philippines, killed at least 89 people in the country. Typhoon Tembin affected Taiwan twice because of its cyclonic loop. From late August to September, three very powerful typhoons, Bolaven, Sanba and Jelawat, directly hit Okinawa Island successively. In October, the remnants of Severe Tropical Storm Gaemi arrived at the Bay of Bengal and re-intensified into a deep depression before making landfall over Bangladesh.

Until 2004, tropical cyclones were not named in the north Indian Ocean. Through its role as Regional Specialized Meteorological Center, the IMD issued warnings on the storm, designating it Super Cyclonic Storm BoB 1. The agency tracked the storm using satellite imagery, radar, and other meteorological stations. The JTWC, providing warnings and support to American military interests, designated the storm as Tropical Cyclone 02B, and also referred to it as a "super cyclone".

Around this time, the storm began moving more to the west- northwest toward Yemen, rounding the southwestern periphery of a ridge. Between 01:00-02:00 UTC on 3 November, Chapala made landfall near Mukalla with winds of 120 km/h (75 mph). This marked the first Yemeni hurricane-intensity landfall on record, and the first severe cyclonic storm to hit the country since May 1960. The center straddled the coast before heading inland.

The feature was named Oval BA, and has been nicknamed Red Spot Junior. Observations of the Red Spot Jr. storm suggest Jupiter could be in a period of global climate change. This is hypothesized to be part of an approximately 70 year global climate cycle, characterized by the relatively rapid forming and subsequent slow erosion and merging of cyclonic and anticyclonic vortices in Jupiter's atmosphere. These vortices facilitate the heat exchange between poles and equator.

The storm fell to Category 1 early on October 8 and to tropical storm status after about 24 hours. Fox then meandered out in the central Atlantic for several days and executed a large cyclonic loop between October 11 and October 14\. Fox turned northward on October 14 and began to accelerate. After curving northeastward, the storm transitioned into an extratropical cyclone early on October 16 while located about east-southeast of Cape Race, Newfoundland.

On August 3, a tropical depression developed in the open ocean over west of the Mexican coastline. Twelve hours later, it strengthened into Tropical Storm Georgette before weakening to a depression on August 4\. It then accelerated to a very rapid speed of 23–45 mph (37–75 km/h). Due to its fast speed, Georgette could not maintain a closed circulation, and thus degenerated into a non-cyclonic disturbance on August 4\.

Dust Storms, whirl winds and dusty winds blow from various quarters towards the end of May. The Southwest wind sets in during April, it is the strongest in June and continues till September. Cyclonic storms with varying wind velocity affects once in 3 or 4 years during the month of November–December. The Northeast monsoon is accompanied by winds which can affect crops, but during Southwest monsoon the air is calm and undisturbed.

The Kali river has a length of about 153 km and is the main source of irrigation in the region. Karwar is south of the Karnataka – Goa border, north-west of Bangalore, the capital city of Karnataka, and north of Karnataka's chief port city Mangalore. Baitkhol port at Karwar is a natural harbour with land side hills and ocean side islands protecting it from cyclonic weather. The four fathom mark lies close to the shore.

Tracking westward, the wave eventually entered the Gulf of Mexico on September 2\. Upon entering the gulf, a surface circulation developed; however, convection associated with the system was not concentrated around the center. The newly formed system then interacted with an upper tropospheric cyclonic vortex situated near the Florida coastline. The following day, Convective banding features around the cyclone led to the National Hurricane Center (NHC) upgrading the system to Tropical Storm Babe.

Hurricane Katrina made landfall as a category 3 cyclone on the Saffir–Simpson hurricane wind scale, indicating that it had become an only moderate level storm. However the catastrophic damage caused by the extensive flooding (Fig. 4) was the result of the highest recorded storm surges in North America. For several days prior to landfall of Katrina, wave set up was generated by the persistent winds of the cyclonic rotation of the system.

The climate of the Southwest National Park is renowned for its adverse, often inhospitable conditions across all seasons of the year. As noted by the Melaleuca- Port Davey Area Plan the climate is characterised by high annual rainfall of over 2000mm (as per the Bureau of Meteorology Port Davey station records from 1946 to 2000), often very strong to cyclonic westerly or south-westerly winds, low temperatures, frosts and high incidence of cloud cover.

Over the next few days one circulation became dominant and the whole system began to strengthen. The first warning was issued by the JTWC on October 23, by that time the cyclonic radius extended over 1,000 nautical miles from the center. Quickly the system strengthen into a tropical storm, and by midday October 24, had become a typhoon. Billie began to curve to the north during this time; passing to the south of Guam.

A February 24, 2007 radar image of a large extratropical cyclonic storm system at its peak over the central United States. Note the band of thunderstorms along its trailing cold front. Rainbands in advance of warm occluded fronts and warm fronts are associated with weak upward motion,Owen Hertzman (1988). Three-Dimensional Kinematics of Rainbands in Midlatitude Cyclones. Retrieved on 2008-12-24 and tend to be wide and stratiform in nature.Yuh-Lang Lin (2007).

The velocity of the liquid spray is approximately the same in both devices. This higher particulate-to-liquid relative velocity increases particulate collection efficiency for this device over that of the spray chamber. Gas velocities of 60 to 180 m/s are equivalent to those encountered in a venturi scrubber. However, cyclonic spray scrubbers are not as efficient as venturi scrubbers because they are not capable of producing the same degree of useful turbulence.

Although the low was initially predicted to travel northward, it instead tracked west-southwestward and moved ashore in northeastern Honduras on October 4. The low became incorporated into a broad cyclonic gyre which was located over Central America by October 5. A center which was located over the eastern Pacific moved across Central America on October 6 and integrated into the gyre. The gyre's center reformed over the northwestern Caribbean Sea on the same day.

The Diocese of Nongstoin was created by Pope Benedict XVI on 28 January 2006. The Apostolic Nuncio to India, Archbishop Pedro Lopez Quintana, ordained Bishop Victor Lyngdoh on 2 April 2006 and installed him as the first Bishop of Nongstoiñ Diocese on 4 April 2006 amidst turbulent torrential cyclonic rain The diocese was bifurcated from the Archdiocese of Shillong and it includes the whole area of the West and South West Khasi Hills district, Meghalaya.

The hurricane accelerated, before slowing in forward motion on September 22\. Between September 24 and September 28, the storm drifted and executed a small cyclonic loop. Thereafter, Carol re-accelerated and was briefly upgraded to a Category 2 hurricane following an Air Force Reconnaissance report of 100 mph (155 km/h) winds. While passing northwest of the Azores, a weather station on Corvo Island reported a sustained wind speed of and a gust up to .

On September 20, METEOSAT imagery indicated an area of convection becoming concentrated while well south of the Azores. It is possible that a mid to upper-level cyclonic circulation interacted with the northern portion of a tropical wave. By the following day, satellite imagery noted a well-defined low-level circulation and thus, Tropical Depression Five while centered about south of the Azores. The depression tracked northwestward and satellite imagery began to indicate banding features.

A tropical wave left the African coast on June 4 showing some cyclonic curvature in the low clouds. It passed Barbados six days later, where a low-to-mid wind shift was detected. The wave was followed by a low level wind surge which was observed in Curaçao on June 12. Most of the shower activity associated with the wave moved westward over South America, and then over Panama on June 14.

Mozambique Channel Eddies are large, warm, anti-cyclonic eddies that propagate southwards in the Mozambique Channel. These eddies may have diameters of up to 300 km, and maximum swirl velocities of nearly 1 m/s. The exact causal mechanism, and location of the eddies formation is still debated. The frequency of eddy occurrence reduces from around seven per year in the north of the Channel, to around four per year in the south.

Under the influence of a low-level trough, a low- pressure area formed over the Arabian Sea in late October. The system organized and the IMD designated the system Depression "ARB 02". The depression moved toward the Middle East during the next few days and intensified into a Deep Depression on November 1. In the morning of November 2, IMD upgraded the deep depression into a cyclonic storm and assigned it the name Keila.

Seedlings would have little change of surviving in a normal dry season; establishment probably requires several consecutive seasons of good rain. The combination of a bushfire followed by several seasons of cyclonic storms probably only occurs every few hundred years, suggesting that opportunities for seedling recruitment are extremely rare. This would explain why the entire population appears to be over two hundred years old. There is little information on threats to the species.

Early on December 23, the storm struck Norther Ceylon and India's Pamban Island with winds estimated at 240 km/h (150 mph), ranking it as a modern-day super cyclonic storm. Weakening somewhat, the storm soon struck Tamil Nadu. Rapid weakening followed once the cyclone was onshore and it degenerated into a depression on December 24 as it emerged over the Arabian Sea. The system later dissipated on December 26 over open water.

Based on this report, the India Meteorological Department (IMD) classified the system as a deep depression. Over the following days, the system quickly intensified as it began moving slowly westward. By December 19, it became a severe cyclonic storm and soon acquired hurricane-force winds early on December 20 while near 5°N. The cyclone became one of only a handful of system to attain such an intensity close to the equator.

Based on satellite imagery, it was estimated that the storm had peak winds of 240 km/h (150 mph), with gusts as high as 280 km/h (175 mph). This ranked the system as a modern- day super cyclonic storm. Additionally, the IMD estimated its central pressure to have been, at most, 970 mbar (hPa; 28.64 inHg). The lowest observed pressure was 978 mb (hPa; 28.88 inHg) in Mannar on the west coast of Ceylon.

Storms were also tracked on an unofficial basis by the American-based Joint Typhoon Warning Center. The JTWC only tracked the longer-lived and stronger cyclonic storms, which all formed after September; by their assessment, this was the fifth such occurrence since 1975 where all storms developed in the autumn. Throughout the year, tropical systems generally lasted longer than in 1994. The systems that affected land generally struck Andhra Pradesh and eastward through Bangladesh.

There are more than 63,400 km of embankments but the floods caused by high tidal bores, often wash away much of the embankments, already weakened and broken by earlier cyclonic storms. In May 2009, the district was hit by high speed cyclone named Aila and subsequent rainfall which continued for two days. This created a disaster in 20 out of 22 blocks of the district. 10 out of 27 municipalities of the district were also severely affected.

Extremely Severe Cyclonic Storm Mala was the strongest tropical cyclone of the 2006 North Indian Ocean cyclone season. In mid-April 2006, an area of disturbed weather formed over the southern Bay of Bengal and nearby Andaman Sea. Over a period of several days, the system became increasingly organized and was classified as a depression on April 24\. Situated within a region of weak steering currents, the storm slowly intensified as it drifted in a general northward direction.

These rods must be made of abrasion-resistant material due to the high velocities present. Figure 4 - Rectangular throat venturi scrubber All venturi scrubbers require an entrainment separator because the high velocity of gas through the scrubber will have a tendency to entrain the droplets with the outlet clean gas stream. Cyclonic, mesh-pad, and blade separators are all used to remove liquid droplets from the flue gas and return the liquid to the scrubber water.

On October 27, an area of convection formed west of Sri Lanka, spawning a circulation in the Palk Strait on the next day. With low to moderate wind shear, the system's convection organized and developed outflow. Early on October 29, a depression developed just east of India's southeast coast. It quickly intensified while moving parallel to the coastline, becoming Cyclonic Storm Ogni later that day with peak 3 minute winds of 65 km/h (40 mph).

About 100 people who had left their homes to seek shelter in a church in Bapatla town were killed when the building collapsed. Fields of paddy and cash crops were submerged by the tidal waves. Thirteen sailing vessels, including some foreign ones, went missing in the storm. About 100 villages were marooned or washed away by the cyclonic storms and the ensuing floods and a total of 10,841 killed or missing, and 34 lakh rendered homeless.

On September 21, Florence lost its surface circulation, and the disturbance executed a small cyclonic loop over Cuba. On September 23, the system redeveloped its surface center, and it became a tropical depression again, moving ashore Monroe County, Florida that day. The storm drifted northeastward across the state, re-intensifying into a tropical storm and reaching winds of 60 mph (95 km/h). The storm turned back to the west-northwest and weakened again to a tropical depression.

A tropical wave – the same that spawned Hurricane Jose in the Atlantic – crossed Central America and entered the Pacific Ocean on September 11. Vorticity associated with the wave soon became intertwined within a broad cyclonic gyre. On September 13, a large area of convection associated with this system began to organize a few hundred miles southwest of the coast of Mexico. At 12:00 UTC that day, a tropical depression formed 150 miles west-southwest of Acapulco, Mexico.

A low pressure area developed within an equatorial trough centered over the southeastern Bay of Bengal on November 22\. After tracking northwestward for about twenty-four hours, the system developed into Tropical Cyclone 04B, while located about 815 km (505 mi) east-southeast of Chennai, Tamil Nadu. While moving northward, it intensified into a deep depression at 1800 UTC on November 23\. Strengthening continued and early on November 24, the deep depression was upgraded to a cyclonic storm.

However, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) on March 29, a signal of further organization. That day, the IMD upgraded the system to a cyclonic storm, and early on March 30 the storm attained winds of 85 km/h (50 mph) while curving to the north-northeast. Increased wind shear from the westerlies imparted rapid weakening, causing the convection to dwindle to the northeast. According to the IMD, the storm rapidly dissipated on March 30.

The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center (JTWC) releases unofficial advisories. An average of four to six storms form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD. Overall, there was a total of seven depressions and four cyclonic storms.

Hurricane Liza originated from a very large area of intense thunderstorms that developed about southwest of the Mexican coast on September 25\. Later that day, satellite imagery indicated that the system had developed a cyclonic circulation. It is estimated that a tropical depression developed at 1800 UTC on September 25, centered about east-northeast of Zihuatanejo, Guerrero. The depression gradually intensified as it tracked west-northwestward, and became Tropical Storm Liza at 1800 UTC on the following day.

For example, within the Northern Atlantic and Eastern Pacific basins, a tropical cyclone with wind speeds of over is called a hurricane, while it is called a typhoon or a severe cyclonic storm within the Western Pacific or North Indian Oceans. Within the Southern Hemisphere, it is either called a hurricane, tropical cyclone or a severe tropical cyclone, depending on if it is located within the South Atlantic, South-West Indian Ocean, Australian region or the South Pacific Ocean.

Lake-effect snow bands near the Korean Peninsula Air masses can be modified in a variety of ways. Surface flux from underlying vegetation, such as forest, acts to moisten the overlying air mass. Heat from underlying warmer waters can significantly modify an air mass over distances as short as to . For example, southwest of extratropical cyclones, curved cyclonic flow bringing cold air across the relatively warm water bodies can lead to narrow lake-effect snow bands.

Downwelling occurs at anti-cyclonic places within the ocean where warm rings are spinning clockwise creating surface convergence. When these surface waters converge, they push the surface water downwards. Another way that downwelling can occur is by the wind driving the sea towards the coastline. Regions that have downwelling have low productivity because the nutrients in the water column are utilized but are not continuously resupplied by the cold, nutrient-rich water from below the surface.

Extratropical cyclones begin as waves in large regions of enhanced mid-latitude temperature contrasts called baroclinic zones. These zones contract and form weather fronts as the cyclonic circulation closes and intensifies. Later in their life cycle, extratropical cyclones occlude as cold air masses undercut the warmer air and become cold core systems. A cyclone's track is guided over the course of its 2 to 6 day life cycle by the steering flow of the subtropical jet stream.

In early May 2020, an area of atmospheric convection began to persist approximately 545 km (340 mi) southeast of Palau, situated within an environment generally conducive for the formation of a tropical cyclone. However, upper-level wind shear initially prevented much development. Satellite data suggested the presence of broad cyclonic rotation within the disturbance, which was designated Invest 95W by the JTWC. Computer forecast models predicted that the system would track slowly towards the west- northwest.

The low soon relocated to the northeast, aligning itself east of the gap wind event which aided in development. A small, well- defined circulation formed by early on October 20 within a broader cyclonic circulation. With increasing deep convection, the system is estimated to have become a tropical depression, assigned the identifier Twenty-E, by 06:00 UTC. Upon its designation, the depression was situated roughly 205 mi (335 km) south-southeast of Salina Cruz, Mexico.

There are more than 63,400 km of embankments but the floods caused by high tidal bores, often wash away much of the embankments, already weakened and broken by earlier cyclonic storms. In May 2009, the district was hit by high speed cyclone named Aila and subsequent rainfall which continued for two days. This created a disaster in 20 out of 22 blocks of the district. 10 out of 27 municipalities of the district were also severely affected.

By May 27, the system weakened to a cyclonic storm and by this time was approaching the northwestern coastline of India, near Gujarat. The following day, the storm made landfall in the Saurashtra region as a deep depression with winds of 55 km/h (35 mph 3-minute winds). The depression quickly weakened after moving inland and dissipated early on May 29\. Although a powerful cyclone over water, the storm had relatively little impact over land.

Variations in the Ekman transport change the sea surface height and depth of the halocline, resulting in Ekman pumping. During anticyclonic regimes—where the wind stress curl is negative—freshwater is pumped into the Beaufort Gyre; during cyclonic regimes—where wind stress curl is positive—freshwater is released into the Arctic Ocean, where it can then flow into the North Atlantic. Giles et al. (2012) conclude that the variability in freshwater content varies with wind stress curl.

Tropical Storm Faxai began as an area of convection that persisted about west of Guam on October 24\. Satellite imagery indicated broad cyclonic turning in the lower levels of the atmosphere, and a trough was near the surface. Convection consolidated around the center of the low-level circulation, and the upper-level environment—low wind shear and good divergence—favored development. The following day, the Japan Meteorological Agency (JMA) classified the system as a tropical depression.

The JTWC assessed the circulation was dissipating near the coast, and the JMA declared Podul dissipated at 1200 UTC on November 15. Operationally, the agency tracked the system into the Gulf of Thailand, and the Thai Meteorological Department tracked Podul to near the Malay Peninsula on November 16, before ceasing advisories on the storm. The remnants later redeveloped into Cyclonic Storm Helen in the Bay of Bengal, which later struck southeastern India on November 22 before dissipating.

An upper air cyclonic circulation developed into a low pressure area on May 28. It slowly organized itself, and favorable conditions led to the intensification of the low pressure area to a depression by the early hours of May 29. Slightly intensifying thereafter, the storm took a northward track and crossed the West Bengal coast in the evening hours of the same day, with peak winds of . The depression attained its minimum central pressure of on May 30.

The airplane unlike its predecessor, can access gadgets in any time once equipped and have ability to enter in building. In the game, there is daily challenges to a friend on survival mode. As in the original game, each player must chose a type of warplane to start a game. Each type has specific weapons: Spitfire uses flamethrower, Yak emits rope-like frozen laser, P40-Tigershark emits cyclonic winds and P38-Lightnings have electrically charged laser.

Howe Sound at Lions Bay experiences a maritime climate with moderated temperature regime and winter precipitation peak driven by cyclonic storms. Temperatures are cool from December through February, rising to a peak in July and August. There is a pronounced precipitation peak starting in October and extending through January, diminishing to a low in June through September. Precipitation is strongly enhanced with elevation as mountain slopes drive air masses upward, a phenomenon known as orographic uplift.

At 00:00 UTC on November 11, the deep depression strengthened into a cyclonic storm, and was named Gaja. After tracking west-southwestward for a number of days, it made landfall in southern India, on November 16. The storm survived crossing over into the Arabian Sea later that day; however, it degenerated into a remnant low in hostile conditions only several days later, on November 20. On the next day, the storm's remnants dissipated near Socotra.

On December 6, the JTWC began to monitor an area of low pressure near the newly-formed Cyclonic Storm Pawan. Two days later, on December 8, the low gained more convection and a defined circulation while moving westward, with the IMD classifying the system as Depression ARB 08. The system later intensified into a deep depression during the early hours of December 9. On December 10, the system degenerated into a well-marked low off the coast of Somalia.

However, as the storm was completing the anti-cyclonic loop later on that day, a reconnaissance plane recorded surface winds above hurricane threshold. Accordingly, the NHC re-upgraded Jose to a hurricane. Rounding the western periphery of the subtropical ridge, Jose moved northward, beginning on September 16. Despite an asymmetric appearance on satellite imagery, the hurricane intensified slightly, reaching a secondary peak intensity of 90 mph (150 km/h) at 12:00 UTC on September 17.

The river is surrounded by mountains and deep valleys. Combined with the climatic conditions of the area the river is prone to quickly developing floods with little warning due to the high rainfalls on the mountain ranges around the catchment and the influence of the cyclonic forces in the adjacent Coral Sea. In March 1996, record flood levels swamped roads and properties throughout the Daintree region. Statistics gathered at the time recorded of rain falling in 24 hours.

As a mid-latitude trough developed over Pakistan, Gonu turned to the north and northeast, though it resumed a westward track after ridging built to the north of the storm. With a solid area of intense convection, it rapidly intensified to attain severe cyclonic status early on June 3, and with good outflow the JTWC upgraded it to the equivalent of a minimal hurricane. The dry air ultimately had a smaller impact on the intensification than previously estimated.

Cyclonic Storm Bijli (JTWC designation: 01B), was the first tropical cyclone to form during the 2009 North Indian Ocean cyclone season. Bijli formed from an area of Low Pressure on April 14. Later that evening, RSMC New Delhi upgraded the low pressure area to a Depression and designated it as BOB 01. The Joint Typhoon Warning Center (JTWC) then issued a Tropical Cyclone Formation Alert for the system and soon after designated it as Tropical Depression 01B.

Early on 29 April, the IMD upgraded the system to a super cyclonic storm – the highest category – and estimated peak winds of 240 km/h (150 mph). The JTWC estimated peak winds of 160 mph (260 km/h), the equivalent to a Category 5 hurricane on the Saffir–Simpson scale or a super typhoon. The cyclone's high winds and low pressure, a rarity for the Bay of Bengal, ranked it among the most intense cyclones in the basin.

Tropical Storm Danny sheared by vertical wind shear on August 28 A strong upper-level trough moving through the southeastern United States forced Danny northeastward. It also triggered the formation of another low pressure system near the coast of North Carolina early on August 29. Although this low formed within Danny's cyclonic envelope, satellite imagery indicated that it did not have the characteristics of a tropical cyclone. Therefore, it is not considered to be a continuation of Danny.

The Agulhas Current flows south along the African east coast. When it reaches the southern tip of Africa, it retroflects back into the Indian Ocean. At this retroflection it leakes warm core eddies known as Agulhas rings into the South Atlantic. This mesoscale anti-cyclonic rings feed the Atlantic meridional overturning circulation (AMOC) and are therefore believed to affect the global climate, although the connection between the leakage, AMOC, and climate change is still poorly understood.

Tropical Storm Bertha was the only system to form during August, developing in the Gulf of Mexico. Despite warm sea surface temperatures (SSTs) in the tropical Atlantic, no storms formed during the month, below the climatological average of one. The low monthly activity was in part due to an unfavorable wind pattern which prevailed across the Atlantic for much of the month. In September, however, conditions for tropical cyclogenesis were more favorable, with concomitant cyclonic activity.

Labrador Sea Water (LSW), formed in the Labrador Sea can reach depths of 2000 m as dense water sinks downward. Classical Labrador Sea Water (CLSW) production is dependent on preconditioning of water in the Labrador Sea from the previous year, and the strength of the North Atlantic Oscillation. During a positive NAO phase, conditions exist for strong winter storms to develop. These storms freshen the surface water, and their winds increase cyclonic flow, which allows denser waters to sink.

Early the next day the IMD reported that Cyclonic Storm Nisha had made landfall in Tamil Nadu, India, at 0030 UTC. Later that day as the IMD reported that Nisha had weakened into a deep depression, The JTWC issued their final advisory on Nisha. The IMD then reported that Nisha had weakened into a Depression and then issued their last advisory the next day, reporting that Nisha had weakened into a well-marked area of low pressure.

Two of the super typhoons, Sally and Opal, set seasonal records - Sally was strongest storm of the season, reaching a pressure of 894 mbar while Opal was the largest system of the season. Five typhoons performed cyclonic loops this season; only two or three happen on average yearly. Kathy did a rare move by executing a second minor loop while undergoing the first loop. Another unusual phenomenon that occurred during the 1964 season was rapid degeneration of typhoons.

No systems strengthened beyond cyclonic storm status. The season was the sixth in a row with below normal activity, based on the seasonal accumulated cyclone energy. Storms generally develop when the monsoon trough is located over tropical waters, with a peak from May to June and another peak in November. The monsoon developed 11 distinct low pressure areas by the end of September, including five monsoon depressions, and the monsoon season was more active than usual.

It was the first cyclonic storm in the month in seven years. Attaining peak winds of 65 km/h (40 mph), the storm took an unusual track to the southwest. On September 19, Pyarr made landfall just northeast of Kalingapatnam in Andhra Pradesh. It turned westward and weakened over land, deteriorating into a remnant low on September 22 over Madhya Pradesh. As a depression, the system produced damaging swells along coastal Bangladesh, forcing 12,000 people to evacuate.

Damage on the island totalled US$15 million (1986 dollars). Retaining super typhoon intensity into December 3, the system weakened and turned northwest on December 4 due to another weakness in the subtropical ridge. The high pressure system to its north restrengthened, turning Kim back to the west on December 5. On December 8, Kim made a cyclonic, or counter clockwise, loop due to a strong surface high building to its north, which was completed on December 11.

European windstorms are also described in forecasts variously as winter storms, winter lows, autumnal lows, Atlantic lows and cyclonic systems. They are also sometimes referred to as bullseye isobars and dartboard lows in reference to their appearance on weather charts. A Royal Society exhibition has used the name European cyclones, with North- Atlantic cyclone and North-Atlantic windstorms also being used. Though with the advent of the "Name our Storms" project, they are generally known as storms.

Typhoon, cyclone, cyclonic storm and hurricane are different names for the same phenomenon, which is a tropical cyclone that forms over the oceans. It is characterized by strong winds, heavy rainfall and thunderstorms. The determining factor on which term is used is based on where they originate. In the Atlantic and Northeast Pacific, the term "hurricane" is used; in the Northwest Pacific it is referred to as a "typhoon" and "cyclones" occur in the South Pacific and Indian Ocean.

Great Dark Spot (top), Scooter (middle white cloud), and Small Dark Spot (bottom). A high-resolution view of the Small Dark Spot The Small Dark Spot, sometimes also called Dark Spot 2 or The Wizard's Eye, was an extraterrestrial vortex on the planet Neptune. It was the second largest southern cyclonic storm on the planet in 1989, when Voyager 2 flew by the planet. When the Hubble Space Telescope observed Neptune in 1994, the storm had disappeared.

There are more than 63,400 km of embankments but the floods caused by high tidal bores, often wash away much of the embankments, already weakened and broken by earlier cyclonic storms. In May 2009, the district was hit by high speed cyclone named Aila and subsequent rainfall which continued for two days. This created a disaster in 20 out of 22 blocks of the district. 10 out of 27 municipalities of the district were also severely affected.

Conflicting observations from Dakar, Senegal, made tracking the wave difficult, with surface observations revealing a clear shift in wind direction and upper-level soundings showing no change. Regardless of the exact position of the system, accompanying convection soon diminished and the system became ill-defined. By June 30, the system grew significantly and multiple low-level circulations developed within the broader cyclonic envelope. Weather models at the time depicted a low probability of tropical cyclogenesis in the subsequent days.

There are more than 63,400 km of embankments but the floods caused by high tidal bores, often wash away much of the embankments, already weakened and broken by earlier cyclonic storms. In May 2009, the district was hit by high speed cyclone named Aila and subsequent rainfall which continued for two days. This created a disaster in 20 out of 22 blocks of the district. 10 out of 27 municipalities of the district were also severely affected.

Gradually strengthening, the system attained typhoon intensity (or modern-day Severe Cyclonic Storm-equivalent) at 00:00 UTC on November 26\. Shortly after reaching this strength, the cyclone began to curve northward, rounding the western periphery of a subtropical ridge centered over Indochina. Due to the ridge's broad size, the tropical cyclone was steered generally due north rather than northeast. Gradual intensification continued as the storm progressed closer to the coasts of Bangladesh and East India.

The cyclonic action further separates the heavier eggshell flakes from the lighter membrane flakes. This invention has been commercialized and can easily separate multiple metric tons per day, allowing for the production of valuable products including commercial volumes of natural eggshell membrane or NEM. Levi New invented a non-chemical and non- thermal separation technique that utilizes airflow to pull egg shells through a venturi. The material is subjected to pressure waves while passing through the venturi.

A major concern is that the recent rapid developments has also resulted in a few drawbacks, such as water scarcity, congestion of roads and the damage to the marshland. It is feared that in a few years unless something substantial is done, the marshlands would all be converted into residential and commercial properties. Every November, Velachery is flooded by cyclonic rains. The major areas that are usually flooded are the low-lying areas around the Velachery Lake.

Health department officials in these districts formed 1,599 teams to attend to those affected by the cyclone. Around 56,000 volunteers were deployed to conduct rescue and relief efforts while the military bases at the coastal districts remain on alert. All coastal infantries of the Bangladesh Army prepared to take immediate action to provide assistance during and post cyclonic destruction. The Bangladesh Navy and the Bangladesh Coast Guard prepared to undertake emergency rescue and relief operations with warships and vessels.

Very Severe Cyclonic Storm Hikaa was a tropical cyclone that struck eastern Oman in September 2019. The third named storm of the 2019 North Indian Ocean cyclone season, Hikaa formed on September 22 west of India in the Arabian Sea. The storm reached peak intensity on September 24, with maximum sustained winds estimated over 140 km/h (85 mph). Later that day, the storm made landfall in eastern Oman south of Duqm, and quickly dissipated over the Arabian Peninsula.

The Korean Star sailed from Hong Kong on 11 May 1988 in ballast with 19 crew aboard. While anchored off Cape Cuvier, she dragged her anchors as a result of cyclonic weather conditions associated with Cyclone Herbie and was wrecked on 20 May 1988. The vessel was declared a constructive total loss after it broke in two shortly after grounding. The remains are found only off shore at the base of a cliff within the boundaries of Quobba Station.

Indian Acad. Sci (Earth Planet. Sci.) 11: 227-236 producing a dominant period of northeasterly tradewinds known as the Panamá Jet, which results in a reversal of water circulation and becomes a cyclonic gyre with a coastal current flowing to the north. Upwelling develops in the Gulf of Panama during the dry season when northeast tradewinds from the Caribbean blow over to the Pacific through a physiographic gap in the central mountain range which divides the Isthmus.

The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center (JTWC) releases unofficial advisories. An average of five tropical cyclones form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD. Throughout the season, the IMD monitored ten depressions, three of which became cyclonic storms.

Hours before making landfall in India, Gay attained its peak intensity as a Category 5-equivalent cyclone with winds estimated at 260 km/h (160 mph). Additionally, the IMD estimated that the storm had three-minute sustained winds of 240 km/h (145 mph), classifying Gay as a modern-day Super Cyclonic Storm. The powerful storm soon made landfall near Kavali, India, in Andhra Pradesh before rapidly weakening onshore. The system eventually dissipated over Maharashtra on November 10.

Storms were also tracked on an unofficial basis by the American-based Joint Typhoon Warning Center (JTWC). During the year, the IMD tracked five tropical disturbances, one of which reformed into a very severe cyclonic storm. Significantly lower than the average of 15 disturbances per year, this made the 1993 season the quietest on record, with two fewer disturbances than the seven that developed in the 1984 season. The inactivity followed the record active 1992 season.

On November 12, it re-intensified into a depression, after convection increased over the center, and the IMD gave the storm a new identifier, ARB 02. Later that day, the JTWC classified the system as Tropical Cyclone 01A. As the storm turned to the north and northeast, it intensified further, based on observations from two ships. The IMD upgraded it to a very severe cyclonic storm on November 14, estimating peak winds of 120 km/h (75 mph).

After the annual monsoon moved across India, a thermal low developed in early June over Maharashtra in west-central India. Steered by the flow of the monsoon, the low moved offshore and tracked generally west-northwestward, bringing heavy rainfall and gusty winds to the coast. Ratnagiri, Maharashtra reported sustained winds of 74 km/h (46 mph). The IMD classified the low as a depression late on June 5, and upgraded it further to a cyclonic storm the next day.

Typically, during a traditional surge, a large mesoscale convective system is located off the southern tip of the Baja peninsula. Flow around such a low pressure system is cyclonic, which corresponds to counter-clockwise. Some of this circulation will make its way into the gulf and get funneled northward towards the southwestern United States like a waveguide. As this moist air travels northward, it encounters the already present southerly winds and gets pushed into southern Arizona.

The physical development processes along the coast are influenced by a multitude of factors, comprising wave motions, micro and macro-tidal cycles and long shore currents typical to the coastal tract. The shore currents vary greatly along with the monsoon. These are also affected by cyclonic action. Erosion and accretion through these forces maintains varying levels, as yet not properly measured, of physiographic change whilst the mangrove vegetation itself provides a remarkable stability to the entire system.

This foreland is particularly vulnerable to erosion when high lake levels are combined with spring and autumn cyclonic activity. Erosion can also occur as spring storms cause ice to scour the lake bottom at the edge of the foreland. Because there is uncertainty about its formation, there is uncertainty with regard to management, although Parks Canada realises the importance of including Point Pelee National Park in management plans.Parks Canada, Point Pelee National Park of Canada, Parks Canada, 2010.

An upper-level low persisted over the Andaman Sea on November 24. By the next day, a circulation center was present about 370 km (230 mi) west of Thailand, although convection was dislocated to the west due to wind shear. After the thunderstorms concentrated over the center early on November 26, the IMD classified the system as a depression. A ridge to the north steered the system generally westward. Outflow and convective organization gradually increased, and late on November 26 the JTWC classified it as Tropical Cyclone 03B. As the rainbands organized around the center, the winds increased; the IMD upgraded the system to a cyclonic storm on November 27, and to a severe and later a very severe cyclonic storm on November 28. By November 28, a 20 km (12 mi) wide eye was developing, prompting the JTWC to upgrade the storm to the equivalent of a minimal hurricane with winds of 120 km/h (75 mph). By comparison, the IMD estimated peak winds of 190 km/h (115 mph).

At around the same time, the IMD classified it as a "low pressure area... likely to become well marked." Upon being classified, the tropical cyclone was moving northwestward under the influence of a ridge over India. Its outflow to the north and south became better defined, although its proximity to the equator limited its southerly outflow somewhat due to wind shear. Early on November 29, the IMD classified the system as a depression, and throughout the day it rapidly intensified to become a cyclonic storm; a cyclonic storm is a tropical cyclone with at least 65 km/h (40 mph) winds sustained for 3 minutes. Around that time, the JTWC assessed the cyclone as reaching peak winds of 120 km/h (75 mph), sustained for 1 minute, along with gusts to 150 km/h (90 mph). Late on November 29, the cyclone weakened slightly, only to regain its peak intensity by November 30; at that time, it developed a banding eye, and was located about 1500 km (900 mi) southeast of the coast of Somalia.

The difference between the succulent Karoo biome and the Nama Karoo biome is that the former receives the little rain that falls as cyclonic rainfall in winter, which has less erosive power than the infrequent but violent summer thunderstorms of the Nama Karoo. Frost is also less common in the succulent Karoo biome than in the Nama Karoo biome. The number of mainly succulent plant species is very high for an arid area of this size anywhere in the world.

While curving northwestward and then northward, Alberto began to re-strengthen, and was upgraded to a hurricane for the third occasion on August 18. Alberto reached a third peak intensity as a Category 2 hurricane with winds of on August 20. After weakening back to a Category 1 hurricane, Alberto had completed a cyclonic loop, which it had started on August 13. Due to decreasing ocean temperatures, Alberto was again downgraded to a tropical storm on August 23 as it accelerated northeastward.

The final tropical cyclone of the season developed from a tropical disturbance which formed 92 mi (148 km) south of Panama on November 13. The system headed west-northwest at until curving westward and speeding up to on the following day. As the disturbance intensified over SST's of , satellite imagery indicated that a cyclonic circulation existed. As a result, the disturbance was upgraded to Tropical Depression Thirteen while west-southwest of the Cabo Blanco Absolute Natural Reserve on November 15.

A tropical wave and its associated low pressure area emerged into the Atlantic from the west coast of Africa on August 21\. By the following day, two METEOSAT satellites indicated that the system had a distinct cyclonic rotation and increasing deep convection. At 12:00 UTC on August 23, Tropical Depression Six developed while located about 415 mi (670 km) west-southwest of Brava, Cape Verde. Initially, a weak deep-layer mean flow caused the depression to track west-northwest.

The initial low failed to develop but a new low formed on western side of the trough. A larger cyclonic circulation associated with the trough and induced a gradual increase in deep convection. The low level convection center was temporarily displaced from the convection, and a smaller embedded circulation developed and was eventually detached from the larger circulation. It is estimated that a tropical depression formed at 1200 UTC 6 September when it was centered about south of Manzanillo, Mexico.

However, in most of New South Wales this blocking high produced uninterrupted dry weather. At Canberra, it was the driest April on record, and a remarkable feature of the month was that the highest rainfalls in New South Wales occurred in the normally dry Western Division. A cyclonic storm in May led to floods on the North Coast, but from June drought again set in over the eastern coastal belt between Bundaberg and Hobart. August and September were particularly dry.

The deadliest and most intense cyclone of the season was Severe Cyclonic Storm Ten, which killed 14,174 in East Pakistan in early November. With peak winds estimated at 150 km/h (90 mph) and a pressure of 966.7 mbar (hPa; 28.55 inHg), it struck just three weeks after the previous system devastated the same area. The storm produced a storm tide that swept 16 km (10 mi) inland, submerging several small islands. The two storms left a combined 200,000-300,000 people homeless.

Supersonic gas separation is a technology to remove one or several gaseous components out of a mixed gas (typically raw natural gas). The process condensates the target components by cooling the gas through expansion in a Laval nozzle and then separates the condensates from the dried gas through an integrated cyclonic gas/liquid separator. The separator is only using a part of the field pressure as energy and has technical and commercial advantages when compared to commonly used conventional technologies.

Later that day, it made a second landfall in extreme southern India near Thoothukudi as a cyclonic storm. Continuing westward, the system emerged into the Arabian Sea on December 28 as a depression and degenerated into a remnant low. On the next day, the remnant low merged with a trough and spread rainfall northward through India. The strongest storm to threaten Sri Lanka since 1992, the cyclone produced estimated wind gusts of 175 km/h (110 mph) near where it moved ashore.

Juveniles typically attain sexual maturity after winter at 5-6 mo of age. The timing of reproduction is dictated primarily by rainfall, with breeding occurring predictably after winter rains in the southern part of its range, and in late summer following cyclonic rains in the Pilbara region further north. It may also breed in spring in the latter region, but only if winter rain has been substantial. Rainfall appears to be tied to enhanced survival, growth, and possibly clutch size and hatching success.

At that time, the storm had intensified into a deep depression. Further strengthening occurred, and it was upgraded to a cyclonic storm early on December 24. After peaking with maximum sustained winds of 65 km/h (40 mph) and a minimum barometric pressure of on December 24, the storm soon weakened and convection diminished, possibly due to interaction with a nearby tropical disturbance. By early on the following day, it was downgraded to a deep depression while moving toward the northeast.

A low-level circulation formed beneath a well-defined mid- level storm, with intense convection and strong winds north of the center. At 06:00 UTC on October 9, the JTWC began classifying the system as Tropical Cyclone 03A. With increasing banding features, the storm strengthened while moving west-northwestward, steered by a ridge to the north. At 09:00 UTC that day, the IMD upgraded the system to a cyclonic storm, estimating peak winds of 65 km/h (40 mph).

The 2003 North Indian Ocean cyclone season was mostly focused in the Bay of Bengal, where six of the seven depressions developed. The remaining system was a tropical cyclone that developed in the Arabian Sea in November, which was also the only system that did not affect land. There were three cyclonic storms, which was below the average of 4–6. Only one storm formed before the start of the monsoon season in June, although it was also the most notable.

The system eventually began a steady northeast track, bringing it ashore in western Myanmar on May 19 as a re- intensified cyclonic storm. It dissipated shortly thereafter over land, and was no longer observable on satellite imagery by May 20. Early and later in its duration, the storm brought rainfall to the Andaman and Nicobar Islands. Although the storm never passed within of the island, the cyclone produced torrential rainfall across southwest Sri Lanka after it stalled in the central Bay of Bengal.

The radar was developed by Bharat Electronics Limited and is used by Indian Air Force and Army. This is the first radar to have been installed in India facing the sea on one side and the land on the other. The data captured by the radar have been used to warn the region of the cyclonic storms forming in the Bay of Bengal and the thunderstorms on the surface. Data from the Doppler radar are currently being used by the Chennai airport.

At 18:00 UTC on September 19, a tropical wave developed into Tropical Depression Thirteen, which was centered located about west-southwest of Cape Verde. Despite unfavorable conditions due to outflow from nearby Hurricane Karl, the depression strengthened into Tropical Storm Lisa on September 20\. After nearly reaching hurricane status, Lisa began executing a small cyclonic loop due to a Fujiwhara interaction with a tropical wave. Additionally, the interaction caused Lisa to weaken to a tropical depression on September 23\.

Deep convection formed near the center and the storm began transitioning to a warm core system. The system was re-classified as Tropical Storm Otto at 12:00 UTC on November 30, although it is possible that Otto transitioned to a fully tropical cyclone one day earlier, on November 29. Although sea temperatures were relatively cold, Otto did not quickly weaken, because of low wind shear. On December 1, the storm curved southeastward and completed a cyclonic loop later that day.

The cyclone drifted north over the central Bay of Bengal, gradually weakening due to heightened wind shear. Turning eastward, the storm deteriorated to a deep depression on May 16 before it curved northeastward and re-intensified into a cyclonic storm. It came ashore in western Myanmar and dissipated over land the following day. In the wake of prolonged precipitation during the first half of May, the cyclone produced torrential rains across southwest Sri Lanka while stationary in the central Bay of Bengal.

Hurricane Roslyn on October 19 The final named storm of the season originated from a tropical disturbance that crossed Nicaragua into the eastern Pacific Ocean. With warm waters and increasing cyclonic organization, it developed into Tropical Depression Twenty-Four on October 15 offshore Guatemala. The system moved quickly west-northwestward under the influence of a ridge over Mexico. Quickly intensifying, the depression attained tropical storm status early on October 16; it was given the name Roslyn by the Eastern Pacific Hurricane Center.

Severnaya Zemlya is consistently cold and quite dry (koppen ET bordering on EF), with a mean annual temperature of , mean annual precipitation of about , and generally overcast skies. Monthly average temperature ranges from in February to in July. The archipelago sees large temperature fluctuations during winter months, as low-pressure cyclonic activity originating in the North Atlantic make their way across the Arctic, bringing precipitation and higher temperatures. These cyclones are most common in September and October, which see 30% of annual precipitation.

A venturi scrubber design. The mist eliminator for a venturi scrubber is often a separate device called a cyclonic separator A packed bed tower design where the mist eliminator is built into the top of the structure. Various tower designs exist The design of wet scrubbers or any air pollution control device depends on the industrial process conditions and the nature of the air pollutants involved. Inlet gas characteristics and dust properties (if particles are present) are of primary importance.

The IMD followed suit, upgrading the storm to a Deep Depression, and soon afterwards to Cyclonic Storm Ockhi. The storm tracked along Sri Lanka's southwestern and western coastline, towards the west-northwest, around the southern verge of a subtropical ridge located over India. Owing to highly favorable conditions, the storm displayed a thick convective ring, surrounding a well-defined eye feature on the same day. The storm tracked westwards and intensified further into a Severe Cyclone Storm early on December 1.

The former was used to estimate the storm's maximum sustained wind speed of 60 mph (95 km/h), while the latter was the lowest barometric pressure in association with the cyclone. Item made landfall near Kings Bay, Georgia, at peak intensity around 04:00 UTC on October 7\. The storm weakened to a tropical depression about eight hours later. It executed a cyclonic loop, briefly emerging into the Gulf of Mexico near Apalachicola, Florida, before moving inland again over rural Taylor County.

On September 8, an extratropical cyclone organized into Tropical Storm Diana north of the Bahamas. Diana proved difficult for meteorologists to forecast, initially moving westward towards Cape Canaveral, but then turned to the north and paralleled the coastline. On September 11, the storm reached hurricane strength, and continued to intensify to a Category 4 hurricane. Diana moved north-northeast, and performed a small anti-cyclonic loop before striking near Cape Fear as a minimal Category 2 hurricane on September 13.

It into Tropical Storm Josephine on September 24, although increased wind shear from a trough weakened the storm back to a tropical depression on September 26\. It remained weak for several days, gradually turning to the north due to a weak trough over the northwestern Atlantic. On October 1, another high pressure area halted its northward movement, causing Josephine to turn to the east. That day, it re-intensified into a tropical storm as it began to execute a small cyclonic loop.

Around 0300 UTC on November 10, a depression developed in the southwestern Bay of Bengal. Three hours later, a bulletin from the India Meteorological Department (IMD) indicated that BOB 03 formed about 265 km (165 mi) east-southeast of Chennai, India. The system steadily intensified and headed northeastward. At 1200 UTC on November 11, the depression reached gale force and was upgraded to Cyclonic Storm BOB 03. At that time, the Joint Typhoon Warning Center (JTWC) initiated warnings on Tropical Cyclone 03B.

Further strengthening briefly slowed later on November 11\. However, early on the following day, the storm resumed intensification. At 0600 UTC on November 12, BOB 03 became a severe cyclonic storm and reached its maximum sustained wind speed of 100 km/h (65 mph), in addition to an estimated minimum barometric pressure of . However, the Regional Meteorological Centre (RMC) in Kolkata, India bulletin at 0530 UTC on November 12, reported maximum sustained winds of only 55-75 km/h (35-45 mph).

Due to an upper- level low in the Gulf of Mexico, the system tracked to the northwest, brushing Central America in its path. The depression developed banding features as the pressure gradually dropped, and intensified into Tropical Storm Lili at around 0600 UTC on October 16\. During this time, the storm executed a small cyclonic loop while a few hundred miles north of the Swan Islands. By early on October 17, Lili had attained hurricane status while it was turning to the north.

Roxanne completed a cyclonic loop across the Gulf of Mexico on October 18. Further weakening occurred, and Roxanne was downgraded to a tropical depression on October 19. A cold front in the Gulf of Mexico turned Roxanne abruptly southward, and the storm dissipated just offshore of Veracruz on October 21. Roxanne was the first October hurricane that formed and reached Category 3 intensity on the Saffir-Simpson Hurricane Scale (SSHS) in the western Caribbean Sea since Hurricane Hattie in October 1961.

Satellite imagery the next day indicated that the system had developed an eye, and it passed within of Futuna. Raja reached hurricane strength on 26 December, as it slowed and began to interact with what would become Severe Tropical Cyclone Sally. Over the next two days, Raja approached to within of Sally in an anticlockwise cyclonic loop as it continued to intensify. The system also passed about southeast of Futuna, as it re-curved east and began to threaten Fiji.

Phethai steadily strengthened and on December 16, Phethai peaked with 65 mph winds and at severe cyclonic storm status. The storm steadily weakened and made landfall at Katrenikona on December 17, with 3-minute sustained winds of 50 mph. Phethai rapidly weakened as it traversed Andhra Pradesh, and finally dissipated over a tropical rainforest south west of Kolkata. Eight people were reported dead after Phethai, and the agricultural damage in Andhra Pradesh was estimated at ₹294.54 crore (US$41.1 million).

On December 3, a depression formed over the east-central Arabian Sea, with the IMD marking it as Depression ARB 06. It gradually strengthened into a deep depression soon after. Initial forecasts expected the system to intensify into a cyclonic storm, however, a high amount of wind shear caused it to weaken substantially, and it weakened into a low-pressure area on December 5, west of the Indian coast. Heavy rains associated with the depression caused extensive flooding in Tamil Nadu.

Pressure perturbations around thunderstorms are noteworthy. With buoyancy rapid within the lower and mid-levels of a mature thunderstorm, updraft and downdraft create distinct mesocenters of pressure. As thunderstorms organized in squall lines, the northern end of the squall line is commonly referred to as the cyclonic end, with the southern side rotating anticyclonically (in Northern hemisphere). Because of the coriolis force, the northern end may evolve further, creating a "comma shaped" wake low, or may continue in a squall-like pattern.

The southwest monsoon was subsequently delayed by six days setting in over the Indian state of Kerala and eventually moved over the state during June 6. Over the next few days the monsoon set in further over the Bay of Bengal, while it was enhanced over the Arabian Sea by the formation of Cyclonic Storm Nanauk. By June 18, the monsoon covered most of the North Indian Ocean and parts of Gujarat, Konkan & Goa, Odisha, Jharkhand, Bihar and Gangetic West Bengal.

Adak's climate creates a tundra Adak has a subpolar oceanic climate (Koppen Cfc), characterized by persistently overcast skies, moderated temperatures, high winds, significant precipitation and frequent cyclonic storms. At Adak, overcast conditions average nearly 75% of the time during June and July, dropping back to approximately 50% of the time from October through February. Adak averages 173 days per year with fog. The foggiest months are July and August when an average of 26 of the 31 days have fog.

Severe weather, such as tornadoes, can occur near the center of cold-core lows. Cold lows can help spawn cyclones with significant weather impacts, such as polar lows, and Kármán vortices. Cold lows can lead directly to the development of tropical cyclones, owing to their associated cold pool of air aloft or by acting as additional outflow channels to aid in further development. An upper tropospheric cyclonic vortex in the western North Pacific, showing high level cloud tops being sucked in.

Tropospheric clouds exert numerous influences on Earth's troposphere and climate. First and foremost, they are the source of precipitation, thereby greatly influencing the distribution and amount of precipitation. Because of their differential buoyancy relative to surrounding cloud-free air, clouds can be associated with vertical motions of the air that may be convective, frontal, or cyclonic. The motion is upward if the clouds are less dense because condensation of water vapor releases heat, warming the air and thereby decreasing its density.

The only company that expressed interest in the new cyclonic vacuum technology was Dyson's former employer, Rotork. Built by Italian appliance maker Zanussi and sold by Kleeneze through a mail order catalogue, the Kleeneze Rotork Cyclon was the first publicly sold vacuum cleaner of Dyson's design. Only about 500 units were sold in 1983. In April 1984, Dyson claimed that he had sent the prototype machines, drawings, and confidential information to American consumer-products maker Amway as part of a proposed licensing deal.

A tropical wave crossed Central America on June 26, creating an area of thunderstorms just inside the tropical eastern Pacific that morning. Cyclonic turning was evident by the night of June 30 while located roughly 350 mi (550 km) south of Manzanillo as the system continued westward. Slowly turning northwest, the system was upgraded to a tropical depression early on July 1 and a tropical storm by nightfall. Maximum sustained winds increased to 60 mph (97 km/h) by noon July 3.

Other factors contribute to various degrees to the inter- ocean exchanges in the region, including filaments from the Agulhas Current and intrusions of water from Antarctica. Cold, cyclonic eddies have been observed in the southwestern Atlantic. Based on model simulations, researchers have found that the interaction of the Agulhas Current and the eastern edge of the bank can result in the Agulhas rings. The provenance of ocean sediments can be determined by analysing terrigenous strontium isotope ratios in deep ocean cores.

On October 6, the India Meteorological Department (IMD) designated the system as Depression ARB 04. A day later, the agency upgraded the system to a deep depression, and on October 8, the IMD upgraded it further to Cyclonic Storm Luban. On the same day, the JTWC initiated advisories on Luban, giving it the designation Tropical Cyclone 05A. By that time the JTWC initiated advisories, Luban had rotating rainbands around a persistent central area of thunderstorms, with good outflow to the north.

Under specific circumstances, upper cold lows can break off from the base of the TUTT. These upper tropospheric cyclonic vortices usually move slowly from east-northeast to west-southwest, and generally do not extend below 20,000 feet in altitude. A weak inverted wave in the easterlies is generally found underneath them, and they may also be associated with broad areas of high-level clouds. Downward development results in an increase of cumulus clouds and the appearance of a surface vortex.

Following such an additive approach, Ruiz-Barradas et al.Ruiz- Barradas et al., Structure of Interannual-to-Decadal Climate Variability in the Tropical Atlantic Sector, Journal of Climate, Vol. 13, 2000 noted that a positive Northern Hemisphere (NH) SST anomaly is associated with a northward, wind-stress anomaly and a subsequent cyclonic (counterclockwise) circulation in the subtropics, which interferes with the background flow easterlies; the opposite is true for the southern hemisphere, where the wind stress anomaly acts to enhance the south-easterlies.

After executing a small cyclonic loop, Kara developed an eye feature on October 14, before strengthening into a hurricane on October 15\. While moving offshore North Carolina, the storm brought tides of above normal between October 10 and October 15, causing coastal flooding in very low-lying areas. By October 15, an upper-level westerlies forced the storm to move northeastward and accelerate. Kara then became to strengthen further and became a Category 2 hurricane at 1800 UTC on October 17\.

A tropical depression formed near Palau on October 28 and made landfall in Vietnam on October 30 as it intensified to a tropical storm and was named "Matmo". The storm brought rainfall to Cambodia and Thailand, while the heaviest rainfall occurred in Vietnam, causing flooding and road closures. The storm quickly weakened to tropical depression status and dissipated, with its remnants later emerging into the North Indian Ocean on November 2. The remnants soon developed into Very Severe Cyclonic Storm Bulbul.

A broad trough developed over the eastern Gulf of Mexico on May 26\. A frontal disturbance formed over Florida along the trough, spawning an area of broad cyclonic turning. After emerging into the western Atlantic Ocean, a closed circulation developed within the system, and it is estimated that a tropical depression formed on May 28 about 100 mi (160 km) east of Jacksonville, Florida. Ship observations in the region suggested that the depression intensified into a tropical storm by late on May 28\.

Cyclone Bola remained near Vanuatu for about a week, during which it reached its peak intensity while executing a cyclonic loop. The most affected locations were Epi island, the Shepherd Islands, and the islands in Malampa Province, and throughout the country the cyclone affected more than 15,000 people and 3,000 houses. In a five-day period the cyclone dropped about 450 mm (17.7 in) of rainfall. Two bridges on Malakula were destroyed, and several other bridges were flooded or damaged.

Alpha's origins were from a tropical wave that developed near the Windward Islands on October 20. Satellite images indicated that a low pressure center associated with the tropical wave formed near Barbados and moved west-northwest with increasing convective activity. In an area of light wind shear, the convection increased and Doppler weather radar data from Puerto Rico detected a well-defined cyclonic circulation. On October 22, the area of low pressure organized into Tropical Depression Twenty-five, southeast of Hispaniola.

By late on October 2, radar imagery remarked that the northern eye wall was affecting portions of the west coast of Mexico. Shortly thereafter, the eye of Hernan became less distinct on satellite images. By 0900 UTC on October 3, based on data from radars in Cuyutlán, Colima, the NHC reported that Hurricane Hernan had executed a cyclonic loop to the southwest of Manzanillo. About an hour later, Hernan made landfall near Barra de Navidad, with winds of 75 mph (120 km/h).

The roof is a large and visible presence externally, and was traditionally steeply pitched. They are of varied materials, including slate and tiles, but are most characteristically sheeted with corrugated steel. The steel roofs could withstand torrential rains and be reused if damaged by cyclonic winds. Typically, the Queenslander is suited to the subtropical climate of Queensland of high rainfall and mild to hot, humid climate with average summer temperatures in the range of 23–36°C (73–97°F).

The main maintenance problems with cyclonic scrubbers are nozzle plugging and corrosion or erosion of the side walls of the cyclone body. Nozzles have a tendency to plug from particulates that are in the recycled liquid and/or particulates that are in the gas stream. The best solution is to install the nozzles so that they are easily accessible for cleaning or removal. Due to high gas velocities, erosion of the side walls of the cyclone can also be a problem.

The first named storm formed out of the interaction between tropical wave and a mid-level tropospheric trough northeast of the Bahamas in late-June. A well- defined circulation became apparent by June 30 and satellite images depicted cyclonic banding features. The following day, the system intensified into a tropical depression and shortly thereafter became a tropical storm as reconnaissance aircraft recorded gale-force winds. An area of high pressure to the east of Alice steered the storm generally to the north.

Both the IMD and the JTWC estimated peak maximum sustained winds of 240 km/h (150 mph), with a minimum central pressure of estimated by the IMD. Operationally, the JTWC estimated slightly higher winds of 250 km/h (155 mph). At its peak, Kyarr had a well- defined eye, surrounded by well-defined rainbands and outflow. For about 12 hours, Kyarr maintained peak intensity, although it remained a super cyclonic storm for about 51 hours while moving toward the Arabian Peninsula.

At around 12:00 UTC on November 29, the tropical cyclone made landfall near the border between Bangladesh and West Bengal at the mouth of the Hooghly River. At the time, the JTWC analyzed the storm to have had maximum sustained winds of 200 km/h (125 mph); this was the cyclone's peak intensity. After landfall, the storm slowly weakened over Bangladesh and was last noted as a cyclonic storm-equivalent with sustained winds of 110 km/h (70 mph) on November 30\.

Out of 35 persons on board at the time, 31 were drowned, including the master and all the officers. The Court was informed that the Fitzroy left Coffs Harbor for Sydney on the afternoon of Saturday, 25 June. During the night the weather became bad and the vessel ran into a cyclonic storm. A large quantity of water came aboard at about half past 6 o'clock on Sunday morning, and thereupon the vessel took a list to port which gradually increased.

Early on May 9 the IMD upgraded the system to a cyclonic storm, estimating winds of 65 km/h (40 mph) and a pressure of . Around that time, the storm was estimated by the JTWC to have attained peak winds of 85 km/h (50 km/h), with an atmospheric pressure of 991 mbar. While located a short distance offshore, the storm turned to the northwest and weakened slightly. At about 0900 UTC on May 10, the storm made landfall near Salalah, Oman.

The North Indian Ocean tropical cyclone basin is located to the north of the Equator, and encompasses the Bay of Bengal and the Arabian Sea, between the Malay Peninsula and the Arabian Peninsula. The basin is officially monitored by the India Meteorological Department's Regional Specialized Meteorological Centre in New Delhi, however, other national meteorological services such as the Bangladesh and Pakistan Meteorological Department's also monitor the basin. The Cyclonic Storm category has historically been used to classify all tropical cyclones with winds between .

On June 7, the JTWC initiated advisories on the system, designating it Tropical Cyclone 03A and estimating peak winds of 85 km/h (50 mph). On the same day, the IMD upgraded the system to a severe cyclonic storm, estimating peak winds of 100 km/h (65 mph). The storm weakened as it continued across the northern Arabian Sea. By June 9, the storm had weakened to a depression, and that day it passed near Masirah Island before moving over eastern Oman.

Turning into the stretch, Runnymede made his move and took the lead in deep stretch, looking the likely winner. However, Apollo closed with a "cyclonic rush" and caught up in the final strides, winning by half a length. The two horses met up again just six days later in the Clark Stakes, with Runnymede winning "in a canter" while Apollo finished third. Runnymede and Belmont Stakes winner Forester were retroactively acknowledged as the co-champion three-year-olds of 1882.

A high pressure system to its north turned the motion of the hurricane to a westward drift, causing it to weaken quickly over land. Flora neared the north coast of Cuba on October 4 before turning to the south. It executed a cyclonic loop and entered the coastal waters off Granma Province. An anticyclone to the west of Flora turned the hurricane to the north, bringing it ashore near Santa Cruz del Sur on October 7 with winds of around .

A dust devil in Arizona A dust devil (also known as a whirlwind) resembles a tornado in that it is a vertical swirling column of air. However, they form under clear skies and are no stronger than the weakest tornadoes. They form when a strong convective updraft is formed near the ground on a hot day. If there is enough low level wind shear, the column of hot, rising air can develop a small cyclonic motion that can be seen near the ground.

The origins of Hurricane Jeanne were from a tropical wave that moved off the coast of Africa on September 7. Containing a scattered area of moderate convection, the wave tracked westward at 12–17 mph (19–28 km/h), located to the south of a large ridge. The system initially showed no signs of development, with unfavorably dry air persisting across the region. On September 11, convection became slightly better organized, and the next day broad cyclonic turning became evident.

Findings of extensive studies in environmental and agricultural sustainability and cultural and economic feasibility, undertaken by WAI in conjunction with the Western Australian Department of Agriculture and Department of Resources Development and the CSIRO–Cooperative Research Centre over a six-year period from 1994 exceeded expectations, in that the scheme was considered to represent a new "international environmental benchmark", a design model for water production, storage, canal conveyance and distribution, for seasonal cyclonic damage protection, environmentally protective entomological control and a water- efficient sub-surface irrigation system.

They sat down and the dog began to fight with something invisible. Two minutes later, the door flew open and fire spread across the room blown by a cyclonic wind with the coals disappearing as they tried to put it out. That evening Mr. Johnson started home on his horse and something jumped on the back grabbing his shoulder as he tried to restrain the horse. He felt it jump off as he neared his home and move in the leaves into the woods.

This type of cyclone uses a secondary air flow, injected into the cyclone to accomplish several things. The secondary air flow increases the speed of the cyclonic action making the separator more efficient; it intercepts the particulate before it reaches the interior walls of the unit; and it forces the separated particulate toward the collection area. The secondary air flow protects the separator from particulate abrasion and allows the separator to be installed horizontally because gravity is not depended upon to move the separated particulate downward.

Erick apparently formed from a poorly defined tropical wave that traveled westward across the tropical Atlantic and reached the eastern North Pacific on July 16. The thunderstorm activity associated with the wave increased on July 18 when the disturbance was centered about south of the southern tip of Baja California. Thereafter, deep convection gradually developed around a large cyclonic gyre which accompanied the wave. It was not until July 20 that a well-defined center of circulation formed and satellite intensity estimates supported tropical depression status.

On December 22, Lili finished executing its large cyclonic loop by passing over the same location it passed one week prior. The combination of its increased forward speed, as well as increased levels of vertical wind shear, created an unfavorable environment which caused steady weakening. On December 23, Lili weakened to a tropical storm while located 430 miles (690 km) northeast of Antigua. It rapidly lost organization as it approached the Leeward Islands, and dissipated just off the coast of the Dominican Republic on December 24.

The Pattamundai Canal running from Cuttack to Alva Lock (80.5 km) constructed by the East India Company during the mid 19th century, is a major irrigation canal passing through the city. The river Brahmani is passing by the side of this municipality and flood water of this river has been inundating over 50% geographical area of this municipality every year. This municipality also comes under the purview of cyclonic zone. So the residence of this municipality suffers a lot due to natural calamity every year.

In early September 1921, the remnants of a Category 1 hurricane brought damaging floods to areas of Mexico and the U.S. state of Texas, particularly in the San Antonio region. On September 4, a tropical cyclone developed in the southwestern Gulf of Mexico near the Bay of Campeche. Moving slowly in a general westward direction, the disturbance reached hurricane intensity on September 7 prior to making landfall south of Tampico, Mexico the following day. The storm weakened over land, and lost cyclonic characteristics later that day.

Buster Crabbe portrayed Red Barry in "13 cyclonic hair-raising chapters" of the 1938 serial, Red Barry adapted from the comic strip. It was the third of five serials from Universal starring Buster Crabbe. The actor William Gould (1886–1969) who portrayed the Commissioner in the serial was not the Will Gould who created Red Barry. In the serial story, Barry attempts to recover two million dollars of stolen bonds intended for Allied war planes while international spies and ruthless underworld gangsters fight to acquire the bonds.

On the same day, the JTWC issued a Tropical Cyclone Formation Alert, although they did not begin advisories due to the center being on the east side of the convection. At 0900 UTC on September 25, the IMD upgraded the system to a cyclonic storm, estimating peak winds of 65 km/h (40 mph). Early on September 26, the circulation moved beneath the convection, prompting the JTWC to begin advisories on Tropical Cyclone 02A. Around that time, the storm's outskirts dropped light rainfall in western India.

The first storm of the season originated from the monsoon trough, developing into a depression on May 10 in the Bay of Bengal. Initially favorable conditions allowed the system to steadily intensify while moving northwestward, reaching peak maximum sustained winds of 140 km/h (85 mph) on May 13\. This made it a very severe cyclonic storm according to the IMD. The storm later drifted northward and later to the east in the central Bay of Bengal, although increased wind shear induced weakening into a deep depression.

Under weak steering currents, the depression drifted south and southwest, executing a small cyclonic loop into the Bay of Campeche. Upper- level winds gave way to an anticyclone above the depression, and the system became Tropical Storm Lorenzo on September 27 about east of Tuxpan. Rapid intensification brought Lorenzo to hurricane status early that evening, less than twelve hours after becoming a tropical storm. Lorenzo reached its peak intensity on September 28, then weakened slightly before making landfall near Tecolutla, Mexico as a minimal hurricane.

The presence of the Humboldt Current and its associated wind shear makes for conditions that inhibit the formation of tropical cyclones. (Worldwide tropical cyclone tracks, 1945-2006.) The trade winds are the primary drivers of the Humboldt Current circulation. Variability in this system is driven by latitudinal shifts between the Intertropical Convergent Zone and the trade winds in the north. Shifts within the South Pacific High at mid-latitudes, as well as cyclonic storms and movement of the Southern Westerlies southward also contribute to system changes.

Equatorwards western boundary currents occur in tropical and polar locations, e.g. the East Greenland and Labrador currents, in the Atlantic and the Oyashio. They are forced by winds circulation around low pressure (cyclonic). ;Gulf stream The Gulf Stream, together with its northern extension, North Atlantic Current, is a powerful, warm, and swift Atlantic Ocean current that originates in the Gulf of Mexico, exits through the Strait of Florida, and follows the eastern coastlines of the United States and Newfoundland to the northeast before crossing the Atlantic Ocean.

Shortly before reaching shore, the system turned north and later west, away from land. After taking this turn, the storm intensified into a very severe cyclonic storm, attaining its peak intensity on May 24 with winds of 215 km/h (130 mph 3-minute winds) and a barometric pressure of 932 mbar (hPa). At the time, this ranked the cyclone as the strongest known storm in the Arabian Sea. After stalling several hundred kilometres offshore, the storm weakened over cooler waters that it had upwelled.

The system originated from one of several powerful tropical waves that moved off the west coast of Africa in the second half of August. When the wave came off the African coast, it already had cyclonic rotation, although it was fairly disorganized. As the wave moved westward into open waters, it developed rapidly. Late on August 21, it formed a low-level circulation and was declared Tropical Depression Nine. The system quickly matured and was upgraded to Tropical Storm Humberto early on August 22.

Tropical Storm Ivan after formation in the eastern Atlantic On August 31, a large tropical wave moved off the west coast of Africa. A tropical system along the wave axis contained a low pressure area as well as an impressive outflow pattern, though initially its convection was disorganized and limited. By September 1 a cyclonic circulation with a diameter of 690 miles (1115 km) was evident on satellite imagery, well to the southeast of the Cape Verde Islands. Several hurricane forecast models anticipated development and strengthening.

Animated radar loop (left, storm-relative velocity; right, reflectivity) of the nearly stationary supercell thunderstorm that spawned the EF3 tornado from 5:36–7:33 p.m. CDT (2236–0033 UTC). A large, very slow-moving, and erratic EF3 wedge tornado remained on the ground for just over an hour as it executed a cyclonic loop in Ottawa County south of the town of Minneapolis and west of Bennington. It initially touched down several miles west of Bennington on May 28 at 5:39 p.m.

On July 24, 2001, a tropical wave emerged off the west coast of Africa, and tracked westward across the Atlantic Ocean. Little cyclonic development occurred until July 28, when convection began to increase along the wave. The wave moved into the eastern Caribbean on July 29, and its convection continued to increase while it tracked west-northwest over the subsequent few days. The disturbance emerged into the Gulf of Mexico on August 1, with rainfall noted over southern Florida and the western tip of Cuba.

A tropical depression formed along the Gulf of Thailand on October 4. The tropical depression degenerated into a remnant low on October 6, as it crossed the 100th meridian on October 7. Under the influence of an upper air cyclonic circulation, it regenerated into a low pressure area over the Andaman Sea and adjoining Tanintharyi region. It slowly organized itself and consolidated into a depression on October 8, followed by the Joint Typhoon Warning Center (JTWC) issuing a Tropical Cyclone Formation Alert (TCFA) the same day.

As a result, the MFR issued their final advisory on the system as it turned extratropical. All the three major Mascarene Islands were placed under a pre-cyclonic alert on 29 December. Mauritius Meteorological Services issued a class III warning for Mauritius on 29 December, indicating the forecast onset of wind gusts. Several key services in Mauritius were closed ahead of Calvinia's approach, including Sir Seewoosagur Ramgoolam International Airport and the Port Louis Harbour amid the country's peak tourism season, effectively suspending external trade with Mauritius.

Due to the Coriolis force acting to the left in the Southern Hemisphere and the resulting Ekman transport away from the centers of the gyre, these regions are very productive due to upwelling of cold, nutrient rich water. Strong upwelling in the gyre is shown where the deep-water isotherms curve upwards. The Weddell front, which is identical to the Southern Antarctic Circumpolar Current Front, separates the Weddell gyre from the Antarctic Circumpolar Current . The flow is cyclonic, although the cavity flow is anticyclonic.

Cyclone is a large scale air mass that rotates around a strong center of low atmospheric pressure. Hurricane Katrina Hurricane, tropical cyclone, and typhoon are different names for the cyclonic storm system that forms over the oceans. It is caused by evaporated water that comes off of the ocean and becomes a storm. The Coriolis effect causes the storms to spin.. Hurricane is used for these phenomena in the Atlantic and eastern Pacific Oceans, tropical cyclone in the Indian, and typhoon in the western Pacific.

On December 2, a depression formed over the southwestern Arabian Sea, east of Somalia. It strengthened into a cyclonic storm on December 4 owing to favorable conditions in the surrounding area, earning the name Pawan. The system continued north, gaining a little more strength, and then turned west the following day, Pawan struggled to maintain its structure due to a high amount of wind shear, but continued to move west towards Somalia. This wind shear caused Pawan's convection to briefly dissipate, but it soon regenerated.

On September 8, it reached its peak intensity as a high- end Category 4 hurricane. However, due to wind shear, Jose weakened over the next few days as it completed an anti-cyclonic loop north of Hispaniola. Despite weakening to a tropical storm on September 14, Jose managed to regain hurricane intensity the next day as it began to curve northwards. Never strengthening above Category 1 status for the remainder of its lifespan, Jose degraded to a tropical storm once again on September 20\.

A weather radar image of a Cyclonic vortex over Pennsylvania with a trailing squall line A squall line or quasi-linear convective system (QLCS) is a line of thunderstorms forming along or ahead of a cold front. In the early 20th century, the term was used as a synonym for cold front. It contains heavy precipitation, hail, frequent lightning, strong straight-line winds, and possibly tornadoes and waterspouts. Strong straight-line winds can occur where the squall line is in the shape of a bow echo.

On 3 August, a low pressure area formed over the Bay of Bengal under the influence of an upper air cyclonic circulation. The system slowly intensified into a depression the following day while being located inland over Midnapore. The depression moved further inland, underwent intensification and was upgraded to a deep depression the same day. The storm moved further westwards and weakened into a depression on August 5, and was last noted as a well marked low pressure area on August 7 over northwestern Madhya Pradesh.

Hudhud underwent rapid deepening in the following days, intensified into a Very severe cyclonic storm and developed a well-defined eye feature. Shortly before landfall near Visakhapatnam, Andhra Pradesh on October 12, Hudhud reached its peak strength with three-minute wind speeds of and a minimum central pressure of . The system drifted northwards over land and was last noted as a well-marked low pressure area over east Uttar Pradesh on October 14. Hudhud brought extensive damage to the coastal districts of Andhra Pradesh.

In 1932, a cyclonic storm severely damaged the school building, resulting in the demolition of a wing constructed in 1886, and the repair and extension of the original core. The residence remained relatively unscathed, only suffering damage to the roof over the kitchen. The new school building remained in use until a major reconstruction of the school occurred in 1958. The Monkland State School continued to develop and expand, with a number of demountable buildings added to the site in the 1970s and 1980s.

Around this time, the cyclone rounded the western periphery of a large subtropical ridge over Thailand, and the storm turned northward between the ridge to the northeast and northwest. The IMD upgraded the system to a very severe cyclonic storm on April 27, estimating winds of 142 km/h (89 mph). By this time, the JTWC anticipated a future track toward the Ganges Delta region of eastern India and Bangladesh. On April 28, the flow of the southwesterlies caused the cyclone to accelerate to the north-northeast.

Sea temperatures vary from about −2 to 10 °C (28 to 50 °F). Cyclonic storms travel eastward around the continent and frequently become intense because of the temperature contrast between ice and open ocean. The ocean-area from about latitude 40 south to the Antarctic Circle has the strongest average winds found anywhere on Earth. In winter the ocean freezes outward to 65 degrees south latitude in the Pacific sector and 55 degrees south latitude in the Atlantic sector, lowering surface temperatures well below 0 degrees Celsius.

Hanukkah Eve windstorm of 2006 off the Washington Coast on December 15, 2006 at 2:00 UTC. Pacific Northwest windstorms, sometimes colloquially known as Big Blows, are extratropical cyclones which form in the Pacific basin, and affect land areas in the Pacific Northwest of the United States and British Columbia, Canada. They form as cyclonic windstorms associated with areas of low atmospheric pressure that track across the North Pacific Ocean towards western North America. Deep low pressure areas are relatively common over the North Pacific.

The film received mixed reviews from critics. IndiaGlitz.com rated the film 3 out of 5 and called it "An entertaining revenge drama from Atlee and Vijay". Gautaman Bhaskaran of Hindustan Times rated the film 2.5 out of 5, saying, "When I walk into a Vijay film, I know exactly what I would be pounded with-- cyclonic action, humongous heroism, nobility and syrupy romance. Vijay's latest Robin Hood adventure, Theri, has all of these ingredients to make the movie into a masala that Indian cinema terms entertainment".

Hurricane Edith passed through the Lesser Antilles and the eastern Greater Antilles, causing 10 deaths and about $43 million in damage, most of which occurred on Martinique. The most significant storm of the season was Hurricane Flora, which peaked as a Category 4 hurricane on the Saffir–Simpson hurricane wind scale. Drifting slowly and executing a cyclonic loop, Flora dropped very heavy rainfall in the Greater Antilles, including over in Cuba. Extreme flooding ensued, leaving behind at least 7,193 fatalities and about $773.4 million in damage.

In 1802 a dock was built for repair of Royal Navy and other vessels, it boasted the only wet dock between Bombay and Calcutta. ‘’Cape Cori, or Hope Island’' as it was called was known internationally for shipbuilding and repairs. The facilities were destroyed by massive cyclonic storms and tidal waves in 1787 (causing 20,000 fatalities) and again on the 9th and 10 May 1832. On 25 November 1839 yet another even greater cyclone finished off the port and it was not to recover.

A ridge to the north caused the depression to move erratically and remain generally stationary. The IMD upgraded the system to a deep depression on January 14, the same day that the JTWC classified it as Tropical Cyclone 02B. On the next day, the IMD upgraded it further to Cyclonic Storm Hibaru, estimating winds of 65 km/h (40 mph), marking an unusual occasion for such a low-latitude storm in January. Drifting southward, the circulation gradually became exposed from the convection, indicative of the weakening.

A tropical depression developed in the South China Sea on September 12 and moved westward into central Vietnam on the next day. Continuing through Laos and Thailand, the system emerged into the northern Andaman Sea on September 15\. Tracked continuously as a depression by the Thai Meteorological Department, it was classified as a depression by the IMD on September 17 west of Myanmar. On the next day, the system intensified into a deep depression and later cyclonic storm, whereupon the IMD named it Pyarr.

At the time of its naming, Cyclone Paula was moving towards the southeast at . In an area of weak steering currents, Paula began to move in a small, clockwise loop. Quickly intensifying under favorable conditions and an environment of low wind shear, the cyclone reached Category 2 status on the Australian cyclone scale at 0000 UTC on February 27, with winds of , sustained for ten minutes. After completing its small cyclonic loop, the cyclone developed a small central dense overcast (CDO), containing a ragged eye.

Tropical Depression Four upon its classification as a tropical cyclone on July 4, just north of Tobago. On June 26, 2005, the National Hurricane Center (NHC) began monitoring a tropical wave well-inland over Africa. The feature was tracked via radiosonde observations from various nations for two days before being analyzed as a surface feature on June 28 over western Senegal. Accompanied by scattered convection—shower and thunderstorm activity—the westward moving system featured some cyclonic flow; it emerged over the Atlantic Ocean early on June 29.

The North Pacific Current is located just north of the Subtropical Gyre and flows in an easterly direction. Also, known as the West Wind Drift or the Subarctic Current, the North Pacific Current also includes the westward flow of the southern boundary of the North Pacific Subpolar Gyre. The North Equatorial Current borders the North Pacific Subtropical Gyre on the south and flows in a westerly direction. The westward flow within the elongated tropical cyclonic circulation is also included in the North Equatorial current.

The relative vorticity is the vorticity relative to the Earth induced by the air velocity field. This air velocity field is often modeled as a two-dimensional flow parallel to the ground, so that the relative vorticity vector is generally scalar rotation quantity perpendicular to the ground. Vorticity is positive when - looking down onto the earth's surface - the wind turns counterclockwise. In the northern hemisphere, positive vorticity is called cyclonic rotation, and negative vorticity is anticyclonic rotation; the nomenclature is reversed in the Southern Hemisphere.

Six hours later, the IMD likewise classified the system as a depression. After development, the depression steadily intensified while moving through the Bay of Bengal; rounding the ridge, it accelerated and turned more to the northwest. The IMD upgraded the system to a deep depression by 12:00 UTC on November 7, and further to a cyclonic storm by 00:00 UTC on the following day. The convection, or thunderstorms, organized into a comma-like structure, which further evolved into a central dense overcast.

Julia then drifted north-northwestward and then northeastward, moving offshore the Southeastern United States on September 14\. A cyclonic loop occurred as strong westerly air developed in the region, with the shear causing fluctuations in intensity. By September 19, Julia degenerated into a remnant low, which later transitioned into an extratropical cyclone and moved inland over North Carolina before dissipating on September 21\. Due to Julia's asymmetrical structure and fairly weak intensity, the storm caused generally minor wind and flooding damage in Florida, Georgia, and South Carolina.

While located just off the north coast of Cuba, the motion of Noel was nearly stationary, though forecasters indicated it could have executed a small cyclonic loop. On October 31, the Canadian Hurricane Centre began tracking the storm. Hurricane Noel undergoing extratropical transition on November 2 Convection increased early on November 1, though initially the center remained to the southwest of the large area of thunderstorms. At 1800 UTC that day, the storm passed over the Bahamian island of New Providence near the city of Nassau.

The 2017 North Indian Ocean cyclone season was a below average season in the annual cycle of tropical cyclone formation. This season produced only three named storms, of which one only intensified into a very severe cyclonic storm. The North Indian Ocean cyclone season has no official bounds but cyclones tend to form between April and December with the two peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean.

Under the influence of a persistent area of convection, a low-pressure area formed over the southeast Bay of Bengal on May 26. It rapidly strengthened on May 28, with the IMD classifying it as a Depression and subsequently upgrading it to a Deep Depression on the same day, designating it as BOB 02. In the early hours of May 29, the IMD reported the storm to have reached Cyclonic storm intensity, naming it Mora. The storm followed a north-northeasterly track parallel to Myanmar coast.

The proposed area includes between the Hlaingthaya-Twante motorway and Seikkyi Kanaungto Township. Phase 1, slated for completion by 2020, will include the construction of five villages and townships, two bridges, main roads, industrial zones, power plants, power distribution facilities and water and sewage treatment plants. Phase 2 will encompass development projects from Dala Township to the Gulf of Martaban. The land is located in a flood-prone area, due to its low-lying elevation, with a maximum elevation of , vulnerable to cyclonic surges like Cyclone Nargis.

The next day, the IMD downgraded it to a depression while it crossed the Deccan Plateau. The final warning was issued on June 24, despite the storm having moved into the Arabian Sea. The JTWC noted in its Significant Tropical Weather Outlook for the North Indian Ocean on June 24 that strong monsoonal low-level flow contributed to increased cyclonic vorticity, with low vertical wind shear and warm sea surface temperatures. It warned that these factors could lead to a rapid regeneration of the cyclone.

The lake Chilika is part of the coastal plains. The plains are rich in fertile silt deposited by the six major rivers flowing into the Bay of Bengal: Subarnarekha, Budhabalanga, Baitarani, Brahmani, Mahanadi and Rushikulya. The Central Rice Research Institute (CRRI), a Food and Agriculture Organization- recognised rice gene bank and research institute, is situated on the banks of Mahanadi in Cuttack. The stretch between Puri and Bhadrak in Odisha juts out a little into the sea, making it vulnerable to any cyclonic activity.

At that time, it was located 555 km (345 mi) south-southeast of Chittagong. Early on May 20, BOB 01 reached its peak intensity as a severe cyclonic storm with winds of 110 km/h (70 mph) and a barometric pressure of 972 mbar (hPa). The JTWC assessed the storm to have peaked with winds of 130 km/h (80 mph), equivalent to a Category 1 hurricane on the Saffir–Simpson Hurricane Scale. An eye developed and the system made landfall several hours later near Chittagong.

If strong cyclonic winds are occurring at the surface and are connected to a cloud base, regardless of condensation, then the feature is a tornado. Debris swirls are usually evident prior to the condensation funnel reaching the surface. Some tornadoes may appear only as a debris swirl, with no obvious funnel cloud extending below the rotating cloud base at any time during the tornadic life cycle. The surface level vortex tends to strengthen over time following initial formation, making the debris swirls and the condensation more apparent.

Any tropical cyclone that develops within the Southern Hemisphere between Africa and 90°E is monitored by Meteo France's La Reunion tropical cyclone centre (MFR, RSMC La Reunion). Within the region a tropical disturbance is defined to be a non-frontal synoptic scale low pressure area, originating over tropical or sub-tropical waters with organized convection and definite cyclonic surface wind circulation with the average wind speed estimated to be not exceeding 27 knots (50 km/h)). A tropical disturbance is MFR's generic term for a non-frontal area of low pressure that has organized convection and definite cyclonic surface wind circulation. The system should be estimated to have wind speeds of less than 28 knots (50 km/h, 32 mph). A system is designated as a tropical depression or a subtropical depression when it reaches wind speeds above 28 knots (50 km/h, 32 mph). Should a tropical depression reach wind speeds of 35 knots (65 km/h, 40 mph) then it will be classified as a moderate tropical storm and assigned a name by either the Sub Regional Center in Mauritius or Madagascar.

The storm intensified further to its peak intensity at 00:00 UTC on June 13, with estimated maximum sustained winds of 60 mph (95 km/h) and a minimum barometric pressure of , based on ship reports and satellite. Subsequently, weakening due to westerly wind shear, Arlene tracking westward on June 13 and turned northwest the following day. Because the steering current became poorly defined, it drifted starting on June 15, and executed a small cyclonic loop later that day. At 00:00 UTC on June 17, Arlene was downgraded to a tropical depression.

The task force rendezvoused with Captain Jasper T. Acuff and his fueling group on 17 December with the intention of refueling all ships in the task force and replacing lost aircraft. Although the sea had been growing rougher all day, the nearby cyclonic disturbance gave relatively little warning of its approach. On 18 December, the small but violent typhoon overtook the task force while many of the ships were attempting to refuel. Many of the vessels were caught near the center of the storm and buffeted by extreme seas and hurricane-force winds.

This cyclone was the sixth cyclonic storm of the 1970 North Indian Ocean cyclone season, and also the season's strongest. The cyclone formed over the central Bay of Bengal on November 8, and traveled northward, intensifying as it did so. It reached its peak with winds of 185 km/h (115 mph) on November 11, and made landfall on the coast of East Pakistan (now Bangladesh) on the following afternoon. The storm surge devastated many of the offshore islands, wiping out villages and destroying crops throughout the region.

Although the sea had been growing rougher all day, the nearby cyclonic disturbance gave relatively little warning of its approach. On December 18, the small but violent typhoon overtook the Task Force while many of the ships were attempting to refuel. Many of the ships were caught near the center of the storm and buffeted by extreme seas and hurricane-force winds. Three destroyers, , , and , capsized and sank with nearly all hands, while a cruiser, five aircraft carriers, and three destroyers suffered serious damage. Approximately 790 men were lost or killed, with another 80 injured.

The outlier was Severe Cyclonic Storm Mukda in late September which remained virtually stationary its entire existence to the southwest of Gujarat. The combined effects of the eight other depressions along with the monsoon itself caused disastrous flooding throughout India. By early August, nearly 500,000 people were evacuated in Mumbai due to rising waters. The collective effects of the depressions alone resulted in at least 562 fatalities with hundreds more attributed to the monsoon rains. More than 1 million people across Odisha were left homeless from the storms.

During periods of cyclonic activity, rainfall associated with the monsoon was above-average as a whole. Departures from average reached 13.8%, 26.2%, 28.1%, 9.8%, and 11.5% for the periods of July 5–12 (BOB 02), August 2–9 (BOB 03), August 9–16 (BOB 04), September 20–27 (Land 01 and Mukda), and September 27–October 5 (BOB 08), respectively. In contrast to the notable activity of the monsoon in respect to tropical cyclone formation, rainfall from the monsoon across India was predominantly below- average due to poor distribution of rain.

Over the following days, the cyclone showed signs of restrengthening and executed an elongated cyclonic loop to the southeast of Papua New Guinea. Rewa subsequently entered a phase of quick intensification while proceeding southeastward, peaking in intensity as a Category 5 severe tropical cyclone. It recurved toward the southwest while gradually weakening for several days. Although forecasters had predicted Rewa to make landfall near Mackay, Queensland, the cyclone began interacting with an upper-level trough on 18 January, causing it to divert to the southeast and move along the Queensland coast.

On October 3, Imtiaz Ahmed Shaikh expressed his grief over the damage caused by Cyclonic Storm Onil and stated that he would be touring the affected region within the following days. At least 40 million Pakistani rupee ($469,000 USD) was allocated in relief funds by Sindh Minister Syed Papoo Shah. On October 4, port officials stated that it was safe for fishermen to resume their activities in the Arabian Sea. Later that day, a rain emergency was declared for Hyderabad and emergency shelters were set up in the city.

This made Linda the first tropical cyclone since Tropical Storm Forrest in 1992 to cross from the western Pacific Ocean into the Indian Ocean. Additionally, upon reaching the Indian Ocean, the India Meteorological Department (IMD) classified the storm as Cyclonic Storm BOB 08, with winds of 40 mph (70 km/h). With warm waters, Tropical Storm Linda gradually re-intensified as it slowed down, due to a weakness in the subtropical ridge. On November 6, it again attained typhoon status while located off the southwest coast of Burma (Myanmar).

In addition, flooding also took place during the month of February in the Central United States. Finally the winter came to a conclusion with a powerful storm system that caused a tornado outbreak and flooding in mid-April. The most intense event, however, was an extremely powerful cyclonic blizzard that impacted the northeastern United States in the first week of 2018. While there is no well- agreed-upon date used to indicate the start of winter in the Northern Hemisphere, there are two definitions of winter which may be used.

Ivo formed from a large tropical wave that moved off the African coast on August 26. The wave was accompanied by a large cyclonic rotation at the low to middle levels and numerous thunderstorms when it entered the eastern Atlantic. On August 28, the wave spawned a northward-moving vortex in the eastern Atlantic, but the wave's southern portion continued westward with very limited convective activity. Once the wave reached the western Caribbean Sea on September 5, the shower activity increased and the whole system continued slowly westward over Central America.

Operationally, the National Hurricane Center considered that the storm had already gained enough tropical characteristics to be classified as a tropical storm, but in post-storm analysis, this was reconsidered. The storm's convection organized around a central core, and the system became a tropical storm on November 23 and received the name Delta. An eye-like feature appeared near the storm's circulatory center several times that day. The larger-scale deep-layered cyclonic circulation within which it was embedded steered it on a slow southward and then south-southwesterly track.

However, the official forecast at the time predicted Delta to strengthen further and become a minimal hurricane. Delta's motion stalled as it reached the southern base of a large cyclonic trough over the northern Atlantic within which it was embedded. Maintaining its intensity, Delta remained motionless for half a day until, that evening when it began a slow southward drift at 6 mph (9 km/h). Maintaining its intensity, Delta remained motionless for half a day Convection broke down in the storm's western semicircle early on November 25; the decreased organization caused slight weakening.

During the first week of November 1994 a large area of disturbed weather accumulated just north of Panama over the southwestern Caribbean Sea. A tropical wave passed through the area and gave it mild convection. A second wave passed through the area on November 6 and introduced cyclonic circulation to the disturbance. Over the next two days, the system gradually organized and sparked a deep convection off Nicaragua's southeast coast. This organization, with initial maximum sustained winds of 30 mph (45 km/h), was designated Tropical Depression Twelve.

Cyclonic winds and torrential rains were subsequently recorded within Vanautu, with food gardens in Aneityum damaged as a result. Ahead of the system impacting New Zealand, MetService issued warnings for gale-force winds and heavy rain in various districts of the North Island. They also warned that Fergus would bring with it around about thirty hours of rain and six to eight hours of damaging winds. As a result, all campers and hikers who were holidaying on the North Island's East Coast were told to pack up and leave the area.

A 2015 economic assessment study of the Sundarbans estimated that the national park provides flow benefits worth ₹12.8 billion (approximately ₹50,000 per hectare of land) annually. Important ecosystem services and their annual valuations include nursery function (₹5.17 billion), gene-pool protection (₹2.87 billion), provisioning of fish (₹1.6 billion) and waste assimilation services (₹1.5 billion). The study also mentioned services such as the generation of employment for local communities (₹36 million), moderation of cyclonic storms (₹275 million), provision of habitat and refugia for wildlife (₹360 million) and sequestration of carbon (₹462 million).

A climatological outlier, the storm was one of only five cyclonic storms at the time in the month of March in the Bay of Bengal. It dropped heavy rainfall in the Andaman and Nicobar Islands, reaching on Hut Bay. Although the storm dissipated over the Bay of Bengal according to the IMD, one analysis suggested the storm re- intensified and made landfall on southeastern India between Chennai and Pondicherry on April 1 with winds potentially as high as 110 km/h (70 mph). The storm did not receive advisories from the JTWC.

Later that day, the JTWC issued a TCFA and the IMD upgraded it to a deep depression, based on improving outflow and organization. On October 16, a nearby ship reported winds of 65 km/h (40 mph), and that day the JTWC began tracking the system as Tropical Cyclone 01B. Early the next day, the IMD followed suit and upgraded the deep depression to a cyclonic storm, estimating peak winds of 65 km/h (40 mph). However, the system persisted in an area of weak to moderate wind shear, preventing further development.

Many of the most memorable and devastating storms in eastern North America and western Europe, popularly known as superstorms, have been winter cyclonic storms, though sometimes occurring in late fall or early spring, that generate near-hurricane-force winds and often large amounts of snowfall. Continued warming of low latitude oceans in coming decades will provide more water vapor to strengthen such storms. If this tropical warming is combined with a cooler North Atlantic Ocean from AMOC slowdown and an increase in midlatitude eddy energy, we can anticipate more severe baroclinic storms. Hansen et al.

The Loop Current and Loop Current Eddies affect biological communities within the Gulf of Mexico. In general, however, it is not the warm-core Loop Current and eddies themselves that affect these communities. Instead, it is the smaller cold-core features known as Frontal Eddies that form around the boundary of the Loop Current and Loop Current Eddies, which affect biological communities in the Gulf. Loop Current Frontal Eddies are cold-core, counter-clockwise rotating (cyclonic) eddies that form on or near the boundary of the Loop Current.

Kerala state received unprecedented rains during the month of July 1924. Kerala received 3,368 mm of rain during the monsoon season (June to September), 64 per cent higher than normal and is the highest recorded rainfall. The flood was probably caused by offshore vortices along the west coast and perturbations higher up in the troposphere and is not attributed to any depression or cyclonic disturbance in the Arabian sea or the bay of Bengal. The rivers in the state were in spate and a sudden opening of the Mullaperiyar sluices caused even greater misery.

The tornado was rated an F5 by the National Weather Service, and the National Centers for Environmental Information (then called National Climatic Data Center) indicated that the damage path of the tornado was roughly or wide and long. The tornado destroyed virtually every house and business building in the community, but all residents survived. The tornado was accompanied by an F-3 anticyclonic tornado two miles to the southeast. One unusual aspect of the F5 cyclonic tornado and F3 anticyclone tornado was the simultaneous right turn made by each.

The depressions bear rain, often intense, on the Ligurian coast and hills of Tuscany, due to orographic lift which affects the southern side of the Apennines. The area of low pressure is slow moving, and may follow a trajectory from west to east, then going on to affect the regions of the Adriatic, or move from the north-west to south-east down along the Tyrrhenian Sea: in this last case, the structure will reach the same cyclonic area of formation of Tyrrhenian depressions, although not related to the latter.

Interacting with Hurricane Manuel on the Pacific coast and the broad cyclonic flow, Ingrid dropped heavy rainfall across eastern Mexico, primarily in Tabasco, Veracruz, and Tamaulipas states. In Tuxpan, Veracruz, rainfall totaled over 10 days, while at the Presa Vicente Guerrero dam in Tamaulipas, precipitation reached . Surface runoff from the storm spread to the Pacific coast of Mexico, producing flooding in Guerrero in combination with Manuel. The impacts from both storms produced 162 billion m3 (5.7 trillion cu ft) of water, the equivalent of filling every dam in the country.

Cyclone Sagar shortly after landfall in Somalia on May 19 Along its rare trajectory through the Gulf of Aden, Cyclonic Storm Sagar affected Socotra and coastal Yemen, Somaliland (North-West Somalia), Djibouti, and Ethiopia. Strong winds from Sagar damaged houses on Yemen's mainland. Heavy rainfall along the coast caused isolated flooding, which damaged roads and electric infrastructure. Yemen's temporary capital Aden was hit by strong winds as tropical cyclone Sagar approached, prompting authorities to a call on residents to evacuate areas near the shore in the southern port city.

Operationally, the cyclone was considered to be a Category 4 equivalent storm by the JTWC, with peak winds of 215 km/h (130 mph). This would have made the system the first recorded storm of that intensity on record in the Arabian Sea. However, in post-storm analysis, it was discovered that 1-minute winds did not exceed 205 km/h (125 mph). The next storm to reach this intensity was Cyclone Gonu in 2007 North Indian Ocean cyclone season, which became the first known super cyclonic storm in the region.

The cyclone developed a concentric eye feature, which is an eyewall outside the inner dominant eyewall, with warm waters aiding in further intensification. Early on 29 April, the JTWC estimated Nargis reached winds of 160 km/h (100 mph), and at the same time, the IMD classified the system as a very severe cyclonic storm. Initially, the cyclone was forecast to strike Bangladesh or southeastern India. Subsequently, the cyclone became disorganised and weakened due to subsidence and drier air; as a result, deep convection near the center markedly decreased.

Moving slowly and erratically, Jeanne weakened further and was downgraded to a tropical depression on November 15\. The storm curved southward and completed a cyclonic loop, before being absorbed by a cold front on November 16. Fringe effects of Hurricane Jeanne triggered a record-breaking 23.28 inches (591 mm) of rain at Key West, Florida within a 24-hour period. As a result of heavy precipitation, schools were and numerous businesses were closed, flights at Key West International Airport were grounded, and power outages and disruptions in telephone service occurred in Key West.

Henriette originated from a tropical wave that departed the west coast of Africa on August 20, 2007. The wave produced some convection while in the Caribbean Sea but reached Central America on August 28 before any significant development could occur. Early on August 30, the area of low pressure, now 400 miles (640 km) south-southeast of Acapulco, Mexico, started to gain clusters of strong convection. By the afternoon of August 30 the system continued to show strong convection and had developed a broad but well defined area of low to mid level cyclonic turning.

Masters also stated that the wind often blew in directions opposite to the waves below. This was the result of the storm's cyclonic motion, a phenomenon rarely seen on the Great Lakes. In the late afternoon of November 10, an unknown vessel was spotted floating upside-down in about of water on the eastern coast of Michigan, within sight of Huronia Beach and the mouth of the St. Clair River. Determining the identity of this "mystery ship" became of regional interest, resulting in daily front-page newspaper articles.

Thereafter, upper-level winds became more conducive as the system turned north-northeast, and Kiko began a period of rapid deepening yielding peak winds of 75 mph (120 km/h) by 06:00 UTC on September 1\. Following peak, an increase in wind shear and track over cooler waters led to a weakening trend. Kiko deteriorated into a tropical storm by 18:00 UTC and further degenerated into a remnant low by 12:00 UTC on September 2\. The remnant low executed a cyclonic loop and tracked southeast before dissipating on September 4.

During January 5, the Australian Bureau of Meteorology first noted the existence of a weak tropical depression over the eastern Coral Sea, however, it has since been determined that the depression developed during January 2 near . The system was subsequently tracked by infrequent satelitte imagery, which revealed that it slowly completed a cyclonic loop near the Solomon Islands before curving back toward the southwest. The system entered the Australian region during 15 January, where it subsequently became Severe Tropical Cyclone Ada before making landfall on Queensland during 17 January.

When Barry became a tropical cyclone, its convection wrapped around roughly half of the center. Outflow in the eastern semicircle was good, although due to upper-level wind shear, it was restricted to southeast of the circulation. The cyclone became embedded within a mid- to-upper-level trough between the ridge over the central U.S. and the ridge over the northwestern Caribbean. A strong, upper-level cyclonic shear axis extended from just south of Cape Hatteras to near Brownsville, Texas, which prevented Barry from accelerating in forward speed.

Very Severe Cyclonic Storm Phet was a powerful tropical cyclone that made landfall on Oman, Western India, and Pakistan. The third named cyclone of the 2010 cyclone season, Phet developed in the Arabian Sea on May 31 to the west of India. With conducive environmental conditions, the storm intensified to reach peak sustained winds of 155 km/h (100 mph) on June 2, based on analysis by the India Meteorological Department (IMD). On the next day, Phet dropped heavy rainfall while moving across eastern Oman, with a peak of in Qurayyat.

On May 12, a trough moved eastward from Mexico and stalled over the Gulf of Mexico and the Caribbean Sea. By May 20, the trough had rotated into a northwest-southeast orientation, which increased diffluence and contributed to the formation of a broad low pressure area over the northwest Caribbean. Early on May 21, the National Hurricane Center (NHC) first indicated the potential for the low to undergo future cyclonic development. On May 23, the low moved over the eastern Yucatán Peninsula, where its development was impeded due to strong wind shear and dry air.

The latter was observed in 1938–1940, when a few white ovals appeared as a result of instability of the southern temperate zone; they later merged to form Oval BA. In contrast to anticyclones, the Jovian cyclones tend to be small, dark and irregular structures. Some of the darker and more regular features are known as brown ovals (or badges). However the existence of a few long–lived large cyclones has been suggested. In addition to compact cyclones, Jupiter has several large irregular filamentary patches, which demonstrate cyclonic rotation.

Lightning on Jupiter's night side, imaged by the Galileo orbiter in 1997 Jupiter – southern storms – JunoCam The storms on Jupiter are similar to thunderstorms on Earth. They reveal themselves via bright clumpy clouds about 1000 km in size, which appear from time to time in the belts' cyclonic regions, especially within the strong westward (retrograde) jets.Vasavada (2005), pp. 1982, 1985–1987 In contrast to vortices, storms are short-lived phenomena; the strongest of them may exist for several months, while the average lifetime is only 3–4 days.

The IMD warned that thatched houses in the path of the cyclone were likely to be completely destroyed, and that kutcha houses could sustain significant damage. The IMD also indicated that a storm surge of 1.5–2.0 m was possible, and had the potential to inundate low-lying coastal areas. Tropical cyclones are relatively infrequent in northwestern India and the northern Arabian Sea. Gujarat had not experienced a hurricane-force tropical cyclone landfall since an unnamed system struck the region as an extremely severe cyclonic storm in June 1998, causing more than 10,000 fatalities.

A low pressure area formed on May 14 near Socotra in the western Arabian Sea. The weather system moved northwestward, steered by a ridge to the northeast and the flow of the regional geography. On May 16, the India Meteorological Department (IMD) classified the low as a depression at 12:00 UTC about 200 km (125 mi) northeast of Cape Guardafui, Somalia. On the same day, the JTWC designated the depression as Tropical Cyclone 01A. The IMD upgraded the system to a cyclonic storm on May 17, naming it Sagar.

On May 18, a weak low-pressure area was detected south of Hispaniola. Moving northward, the low became sufficiently organized to be classified as a tropical storm at 1200 UTC on May 19, southeast of Turks Island. At the time, ship observations indicated that the disturbance had a well-defined cyclonic circulation, with the strongest winds situated in the northern semicircle of the cyclone. Continuing northward, the tropical storm gradually intensified and attained maximum sustained winds of 65 mph (100 km/h) by 0000 UTC on May 22\.

Under the influence of an active southwest monsoon surge, a low pressure area formed over the Arabian Sea on June 9. It slowly organized, and was classified tropical storm 02A by the JTWC in the early hours of June 10. In the following hours, the IMD upgraded the storm to a depression and subsequently a deep depression, designating it "ARB 01". On June 11, the system was upgraded to Cyclonic Storm intensity and was named Nanauk by the IMD as it continued to intensify under favorable environmental conditions.

Animation of cloud evolution from cumulus humilis to cumulonimbus capillatus incus One agent is the convective upward motion of air caused by daytime solar heating at surface level. Airmass instability allows for the formation of cumuliform clouds that can produce showers if the air is sufficiently moist. On moderately rare occasions, convective lift can be powerful enough to penetrate the tropopause and push the cloud top into the stratosphere. Frontal and cyclonic lift occur when stable air is forced aloft at weather fronts and around centers of low pressure by a process called convergence.

This flow also amplified the storm's outflow, and the cyclone intensified further. By 12:00 UTC on April 28, or about 31 hours before landfall, the JTWC was correctly forecasting a landfall in southeastern Bangladesh. Early on April 29, the IMD upgraded the system to a super cyclonic storm – the highest category – and estimated peak winds of 235 km/h (145 mph). The JTWC estimated peak winds of 160 mph (260 km/h), the equivalent to a Category 5 hurricane on the Saffir–Simpson scale or a super typhoon.

The water circulation is primarily wind driven. Gordon's Bay is in the wind shadow of the Hottentots-Holland Mountains for south easterly winds, and this causes a semi-permanent anticyclonic eddy and associated anticlockwise gyre, in the opposite direction to the usual cyclonic circulation of the main part of the bay. In the summer to early autumn (January–March), cold water upwelling near Cape Hangklip causes a strong surface temperature gradient between the south- western and north-eastern corners of the bay. In winter the surface temperature tends to be much the same everywhere.

Cyclone Ada was first noted by weather satellite imagery as a disorganised area of disturbed weather over the eastern Coral Sea on 5January. In the early stages of its life, the system was far from ships and only peripherally detected by weather stations. More recent analyses have determined the tropical low originated on 3January, just west of Vanuatu. For about ten days observations of the low remained scarce, but infrequent satellite imagery revealed that it slowly completed a cyclonic loop nearing the Solomon Islands before curving back toward the southwest while remaining weak.

During her creation, designers focused on maintaining an innocent appearance for her face, to give the character a sense of feeling fresh and young. Freedom of movement between the sword and shield were emphasized, with the intention to allow for the blade to rotate around the shield for cyclonic attacks. Besides Cassandra, her moveset and weapons formed the basis of the character Lizardman, introduced in the first Soulcalibur. An alternate character named , a brunette clad in asymmetrical armor, was conceived during the development of Sophitia's secondary outfit in Soul Edge, but was abandoned.

Following further development, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert (TCFA) as they anticipated the system to develop into a tropical storm. Early the next morning the JTWC reported that the depression had intensified into a tropical storm and designated it as Cyclone 01B. The storm tracked towards the west-northwest due to a mid-level ridge over India. Later that morning RSMC New Delhi reported that the depression had intensified into a deep depression and reported it was expected to intensify into Cyclonic Storm Bijli.

The agency estimated a minimum central pressure of . alt=Chapala approaching Yemen on 2 November At the time of peak intensity, Chapala was moving to the west-southwest due to a ridge to the north. Initially, the IMD forecast that Chapala would intensify further into a super cyclonic storm, and the JTWC anticipated t strengthening into a Category 5-equivalent. Instead, the storm began an eyewall replacement cycle on 30 October, causing the inner eyewall to degrade and an outer eyewall to form; this resulted in a slight drop in intensity.

Jeremy Fry provided 49% of the investment for cyclonic vacuum development, and the rest came from a loan. In the shed behind his house, Dyson developed 5,127 prototype designs between 1979 and 1984. The first prototype vacuum cleaner, a red and blue machine, brought Dyson little success, as he struggled to find a licensee for his machine in the UK and America. Manufacturing companies such as Hoover did not want to licence the design, probably because the vacuum bag market was worth $500m and thus Dyson was a threat to their profits.

Cyclonic eddies is another source of edge upwelling west of Port Elisabeth. Plumes of warm surface water migrate onto the bank along its eastern edge, providing subtropical surface water from the Indian Ocean. In summer, easterly winds can intermittently drive coastal upwelling along the South African south coast. The Agulhas Bank is dominated by westerly winds and most of the upwelling on the bank is related to the interaction of the Agulhas Current on the eastern edge, but easterly winds do occur, especially in summer and fall, and can generate local upwelling cells.

Early on October 26 the IMD upgraded the depression to a deep depression, with wind speeds of 30 knots (35 mph, 55 km/h). At the same time the JTWC designated the depression as Cyclone 04B. Later that day the IMD reported that the Deep Depression had intensified into a Cyclonic Storm with it being named as Rashmi. During that evening the IMD reported that Rashmi had reached its peak 3 minute wind speeds of 40 knots, whilst the JTWC also reported that Rashmi had reached its peak 1 minute wind speeds of 45 knots.

The Japanese cruiser became separated from its squadron in the course of cyclonic weather in April 1903 and was the first to arrive at the port of Fremantle, thereby becoming the first vessel of the squadron to make port in Australia. The ship was equipped with wireless telegraphy equipment. (Callsign JUO) was the third (and final vessel) in the of protected cruisers in the Imperial Japanese Navy. She was part of the Japanese squadron which visited Australia in 1903, all of which were equipped with Marconi wireless telegraphy.

Carlos originated from a tropical disturbance moving that was moving westward along the northern edge of the Intertropical Convergence Zone (ITCZ). The wave developed into the third tropical cyclone of the season at 1800 UTC on June 7\. Due to weak steering currents, the depression moved north and then south, which subsequently resulted in a very small cyclonic loop. By 0000 UTC on June 10, the depression was upgraded to a Tropical Storm Carlos; at the time, the storm also attained its maximum sustained winds of 40 mph (65 km/h).

Other circulation features include the anticyclonic gyres which are shed by the Loop Current and travel westward where they eventually dissipate, and a permanent cyclonic gyre in the Bay of Campeche. The Bay of Campeche in Mexico constitutes a major arm of the Gulf of Mexico. Additionally, the gulf's shoreline is fringed by numerous bays and smaller inlets. A number of rivers empty into the gulf, most notably the Mississippi River and Rio Grande in the northern gulf, and the Grijalva and Usumacinta rivers in the southern gulf.

At low latitudes the Hadley circulation dominates, and is essentially the same as the process which on Earth generates the trade winds. At higher latitudes a series of high and low pressure areas, called baroclinic pressure waves, dominate the weather. Mars is drier and colder than Earth, and in consequence dust raised by these winds tends to remain in the atmosphere longer than on Earth as there is no precipitation to wash it out (excepting CO2 snowfall). One such cyclonic storm was recently captured by the Hubble Space Telescope (pictured below).

On 19 May, the IMD reported that the storm had reached cyclonic storm intensity, naming it Roanu. The cyclone drifted in a northeastward track, and continued to intensify until persistent wind shear and its proximity to land eventually caused the storm to start weakening, on the same day. However, the wind shear soon decreased, and Roanu reintensified as deep convection became established over and around the low-level circulation center (LLCC). Moving generally east-northeastwards, the storm made landfall just northwest of Chittagong, Bangladesh on 21 May, upon which it rapidly weakened.

Limestone slurry is sprayed with single fluid spray nozzles to control acid gas emissions especially sulfur dioxide (SO2) emissions from coal-fired power plants with liquid scrubbers. Calcium hydroxide (lime) is atomized into a spray dryer absorber to remove acid gases (SO2 and HCl) from coal-fired power plants. Water is sprayed to remove particulate solids using a spray tower or a cyclonic spray scrubberR H Perry, C H Chilton, C W Green (Ed), Perry's Chemical Engineers' Handbook (7th Ed), McGraw-Hill (2007), sections 12.23, Cooling towers use spray nozzles to distribute water.

Rita completed its cyclonic loop on July 25 and subsequently accelerated northward as it moved into a convergent flow region between the Manchuria low and the ridge near Japan. The storm skirted the Korean Peninsula on July 26, passing near Jeju Province off the southwestern coast of South Korea, before moving over the Yellow Sea. Turning westward over the Sea, Rita brushed the northern coast of Shandong Peninsula in China before transitioning into an extratropical cyclone over the Bohai Sea around 12:00 UTC on July 26 according to the JMA's best track.

The ash cloud that normally would have been dispersed across the oceans was redistributed over Luzon by the cyclonic winds of the typhoon, greatly exacerbating the damage caused by the eruption. The water-laden ash fell over the evacuated Clark Air Base, as well as the rest of Luzon, resulting in downed power lines and the collapse of flat-roofed buildings. In some areas it was practically raining mud. Yunya exited Luzon through the Lingayen Gulf as a weak tropical storm and then turned north toward a break in the subtropical ridge.

Under the influence of an ongoing onset of a southwest monsoon, a low pressure area formed on June 6. It slowly consolidated, prompting the Joint Typhoon Warning Center (JTWC) to issue a Tropical cyclone formation alert (TCFA) on June 6. The following day, the India Meteorological Department (IMD) issued its first advisory for the system, designating it ARB 01. Later the same day, the JTWC reported the storm had reached tropical cyclone intensity, and on June 8, the IMD upgraded the storm to a cyclonic storm, assigning it the name Ashobaa.

The Indian Meteorological Department (IMD), however, estimated the system to have been considerably weaker and only upgraded it to a cyclonic storm with 65 km/h (40 mph) was as it made landfall in Rakhine State on May 19. Once onshore, the storm accelerated and weakened, being last noted early on May 20 as a dissipating system near the Myanmar–China border. Striking Myanmar on May 19, the storm caused considerable damage in coastal areas of Rakhine State. The hardest hit areas were Taungup, Thandwe, Manaung, Kyaukpyu, and Ramree.

After clearing Sri Lanka, the storm intensified further into a severe cyclonic storm, attaining peak three-minute winds of 100 km/h (65 mph) and a pressure of 988 mb (hPa; 29.18 inHg). After weakening to a tropical depression over India, it restrengthened to a 65 mph storm before making landfall on western India on the 17th. Torrential rains produced by the storm caused extensive damage in Andhra Pradesh, Karnataka, Kerala, and Tamil Nadu with at least 263 people losing their lives. Tamil Nadu was the hardest hit with 188 people were killed there.

Moderate wind shear allowed the system to strengthen further, and the IMD classified it as Cyclonic Storm Fanoos early on December 7\. Later that day, the agency estimated peak 3 minute winds of 85 km/h (50 mph). Two days later, the JTWC estimated peak 1 minute winds of 110 km/h (70 mph) as the storm bypassed northern Sri Lanka. Wind shear and proximity to land weakened Fanoos into a deep depression on December 10, and shortly after it made landfall on eastern Tamil Nadu near Vedaranyam.

The deep convection quickly organized into well-defined cyclonic bands, and early on January 20 Hannah attained its peak intensity of 60 mph near the island of Yap. Increased southeasterly wind shear weakened the storm, leaving its dwindling convection situated along the northern portion of the circulation. Interaction with a large and powerful extratropical cyclone left the storm moving erratically, and on January 22 Hannah weakened to tropical depression status. Its motion turned to a steady southwestward motion, and on January 27 Hannah dissipated a short distance east of the Philippine island of Mindanao.

During 2015 a modification to the intensity scale took place, with the IMD and WMO calling a system with 3-minute maximum sustained wind speeds between and an extremely severe cyclonic storm. Water temperatures in the Arabian Sea are typically warm enough to allow for tropical cyclogenesis year round, although strong wind shear from the monsoon trough prevents formation in the summer months and limits intensity other times of the year. An increase in air pollution since the 1930s caused a decrease in the wind shear, allowing storms to have become stronger since 1979.

Tropical Storm Emily was a weak Atlantic tropical cyclone that brought torrential rains to much of the northern Caribbean in 2011. The fifth named storm of the annual hurricane season, Emily developed from a strong but poorly organized tropical wave that traversed the open Atlantic over the last week July. On August 1, it approached the Lesser Antilles and became more consolidated, producing inclement weather over many of the northern islands. Two days later, the disturbance’s wind flow became more cyclonic with a defined center of circulation, which marked the formation of Tropical Storm Emily.

However, a deepening high-level trough and a building ridge enhanced outflow and deep convection on August 25\. Additionally, reconnaissance aircraft flights began indicating a transition to a warm-core. Unfavorable northwesterly winds briefly halted further development, though by late on August 26, Bravo resumed acquiring tropical characteristics after another deepening trough accelerated the storm eastward. After reconnaissance aircraft reported winds of and satellite imagery indicated a storm with a classic cyclonic appearance, Bravo was reclassified as Hurricane Betty while located about west of the Azores on August 27.

A tropical disturbance was tracked south of Ponape in late September before consolidating into a tropical depression on the 29th to the east of the Philippines. The depression moved towards the west and was named Tropical Storm Brenda on the 30th and became a typhoon the same day. Brenda then completed a small cyclonic loop on 1 October before turning towards the northwest and strengthening to a peak of . Brenda turned more northerly and skimmed the southern coast of South Korea before turning extratropical in the Sea of Japan.

On August 18, a reconnaissance aircraft observed sustained winds of 90 mph (150 km/h) to the south of the center; a minimum barometric pressure of was also observed. After the reconnaissance aircraft flight into the storm on August 18, residents of Kauai and Oahu were alerted of a possible cyclonic loop. However, later that day, the high pressure ridge weakened, causing Hiki to turned westward and pass south of French Frigate Shoals and Midway Island. Late on August 19, Hiki weakened to a tropical storm and then resumed its course to the northwest.

Similar to other islands in the archipelago, São Miguel is influenced by ocean currents and winds, and, in particular, the cyclonic Gulf Stream. It functions as a moderating force in the islands, keeping temperatures hovering between and throughout the year. The island's location also makes it susceptible to many Atlantic storms, and precipitation tends to be elevated during the winter periods. Although climate regimes depend on local topography, the largest city Ponta Delgada has a subtropical mediterranean climate (Köppen Csa) with low seasonal variability and diurnal temperature variation being low.

Severe Cyclonic Storm Aila (JTWC designation: 02B) was the second named tropical cyclone of the 2009 North Indian Ocean cyclone season. Warned by both the Regional Specialized Meteorological Center (RMSC) and Joint Typhoon Warning Center (JTWC), Aila formed over a disturbance over the Bay of Bengal on May 23, 2009 and started to intensify and organize reaching sustained wind speeds of 110 kmh (70 mph). It was the worst natural disaster to affect Bangladesh since Cyclone Sidr in November 2007. A relatively strong tropical cyclone, it caused extensive damage in India and Bangladesh.

Enrique formed from a westward-moving tropical wave that crossed the Atlantic from June 30 to July 8. A short-lived cyclonic circulation center within the wave was detected on satellite imagery when the system was over the eastern Atlantic. However, persistent deep convection did not occur until the wave neared the Gulf of Tehuantepec in the eastern Pacific Ocean on July 11. On July 12, the convection became more concentrated about south of Acapulco, near a mid-level vortex within the wave; however, it had diminished the next day.

The depression moved slowly southwest for the next two days without much fluctuation in its strength. At the time, the Weather Bureau first noted the storm's cyclonic nature on October 11, but nonetheless the available observations suggested the cyclone was of meager intensity south of Jamaica. The storm then turned west and quickly strengthened, becoming a tropical storm on October 12 and a hurricane the following day. On October 14, its maximum sustained winds topped out at 110 mph (175 km/h) based on nearby observations taken on the Swan Islands.

The 2011 North Indian Ocean cyclone season was the least active tropical cyclone season in the North Indian Ocean since 1993.(Note: Creation of an account in the website is required in order to access data.) Only two cyclonic storms formed, below the average of four to six. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean.

On November 6, the IMD upgraded a low pressure area into a Depression, designating it ARB 03. The system was forecasted to intensify into a deep depression and move towards the Gulf of Aden in the next 72 hours. On the same day a TCFA was issued by the JTWC. The IMD upgraded the storm into a deep depression on November 8, and forecasted that it would intensify into a cyclonic storm within the next 24 hours which was followed by an upgrade to a tropical storm by JTWC.

Around the same time, the JTWC estimated peak 1 minute winds of 155 km/h (100 mph), based in part on the 26 km (16 mi) eye in the center of the convection. As Hikaa was nearing land, the eye deteriorated, and the JTWC assessed that the storm weakened. The IMD meanwhile assessed that the cyclone maintained its peak intensity. Around 14:00 UTC on September 24, Hikaa made landfall in eastern Oman just north of Duqm, becoming the first very severe cyclonic storm on record to strike the country in September.

Diagram of the Fujiwhara effect, showing how 2 tropical cyclones interact with each other. When cyclones are in proximity of one another, their centers will circle each other cyclonically (counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere) about a point between the two systems due to their cyclonic wind circulations. The two vortices will be attracted to each other, and eventually spiral into the center point and merge. It has not been agreed upon whether this is due to the divergent portion of the wind or vorticity advection.

Locating the center within the CDO can be a problem for strong tropical storms and with systems of minimal hurricane strength as its location can be obscured by the CDO's high cloud canopy. This center location problem can be resolved through the use of microwave satellite imagery. After a cyclone reaches hurricane intensity, an eye appears at the center of the CDO, defining its center of low pressure and its cyclonic wind field. Tropical cyclones with changing intensity have more lightning within their CDO than steady state storms.

On April 13, an area of low pressure formed in the South Bay of Bengal, under the influence of a persistent area of convection, in a span of six hours. Under favorable conditions, rapid deepening took place, and the system was classified as a depression on April 15. Later on the same day, it further intensified into a Deep Depression, and then into Cyclonic Storm Maarutha. The system moved very fast under the influence of mid-latitude trough in westerlies lying over India in the middle and upper tropospheric levels.

In this process the music breaks the scale by thundering trumpets and pouring vials of wrath together with subtle musical poetry. The naughty nought is the source of all creative energy and is manifested through whirling cyclonic motion from the very shatters of matter to the spiralling galaxies. By contemplating the kinetic aspect of this naughty ality you gain your former potency as the master and creator without mutilating your fellow beings.” Later that year, the band was close to an end, as different members pursued various projects.

The Weddell Sea is one of few locations in the World Ocean where deep and bottom water masses are formed to contribute to the global thermohaline circulation. The characteristics of exported water masses result from complex interactions between surface forcing, significantly modified by sea ice processes, ocean dynamics at the continental shelf break, and slope and sub-ice shelf water mass transformation. Circulation in the western Weddell Sea is dominated by a northward flowing current. This northward current is the western section of a primarily wind-driven, cyclonic gyre called the Weddell Gyre.

Moving more west- northwesterly, the cyclone continued to deepen as it approached southern India. On December 21, satellite imagery showed clouds from the storm covering an area roughly 965 km (600 mi) wide. Several prominent banding features were present, with one such feature, extending over 240 km (150 mi) crossing the equator while maintaining a cyclonic arc. Clouds associated with the cyclone extended as far as 485 km (300 mi) into the Southern Hemisphere. Several vessels encountered the storm, with one reporting 110 km/h (70 mph) winds early on December 22\.

In mid-May, a monsoon trough situated over the Bay of Bengal began showing signs of cyclonic development. By May 20, synoptic data indicated the presence of a weak circulation; however, the system remained disorganized. Following a dramatic increase in convection and organization, the JTWC issued a Tropical Cyclone Formation Alert on May 23 and subsequently began monitoring the system as a tropical depression hours later. Initially, the depression tracked slowly towards the north-northwest before abruptly turning westward and slowing due to weak mid-level steering currents.

On 19 May, the IMD reported that the storm had reached cyclonic storm intensity, and assigned it the name Roanu. At the time, Roanu was tracking slowly northward along the northern periphery of a subtropical ridge located over the Malay Peninsula. Despite favorable outflow and warm sea surface temperatures (SSTs) reaching , its proximity to land and moderate vertical wind shear kept the storm from intensifying rapidly. The diurnal temperature variation over land and the persistent wind shear began to affect the deep convection obscuring the low- level circulation center (LLCC).

A cyclonic eddy near Durban sometimes causes a northward current to flow between Aliwal Shoal and Ballito. The submarine canyons in the Natal bioregion include the Tugela and Goodlad canyons in the north and several others between Port Shepstone and Port St Johns. Reefs occur mainly in the southern and central areas within this bioregion and there is an important deep reef complex along most of this coastline. A commercial line fishery largely based on surf-launched vessels is important in this region, and the annual sardine run occurs in the southern coastal waters.

On July 24, a tropical wave emerged from the east coast of Africa, near the Cape Verde Islands. The wave was disorganized and failed to develop convection as it traversed the Atlantic Ocean over the next several days. The wave eventually entered the Eastern Pacific basin on August 2, and interacted with a broad area of cyclonic flow located a few hundred miles south of Mexico. The wave became better organized throughout the day, and an area of low pressure formed 660 mi (1060 km) south of Manzanillo, Mexico on August 5.

The storm originated from the monsoon trough on November 7 in the Bay of Bengal, east of India. Moving northwestward, the system gradually intensified while moving toward land, eventually developing an eye in the middle of the convection. Reaching peak 3 minute winds of 120 km/h (75 mph), the IMD classified the system as a very severe cyclonic storm, in line with the 130 km/h (80 mph) wind estimate from the JTWC. On November 9, the cyclone made landfall near the border of Andhra Pradesh and Orissa.

Towards the end of April 2008, the Inter-Tropical Convergence Zone over the Indian Ocean became very active, with a tropical disturbance developing under its influence during 25 April. Over the next couple of days, the disturbance gradually developed further within an area of low vertical wind shear, before it was classified as a depression by the India Meteorological Department early on 27 April. Initially, the depression moved westward and was classified as a deep depression by the IMD, before the United States Joint Typhoon Warning Center (JTWC) initiated advisories and classified the storm as Tropical Cyclone 01B later that day. The system subsequently started to move north-westwards under the steering influence of an anticyclone and an upper level ridge of high pressure. At 0000 UTC, 5:30 AM Indian Standard Time, on 28 April, the IMD upgraded the system to Cyclonic Storm Nargis, while it was located about 550 km (340 mi) east of Chennai, India. On 28 April, Nargis became nearly stationary, while situated between high- pressure ridges to its northwest and southeast. That same day, the JTWC upgraded the storm to cyclone status, the equivalent of a minimal Category 1 hurricane on the Saffir-Simpson hurricane scale. Around the same time, the IMD upgraded Nargis to a severe cyclonic storm.

The origins of Tropical Storm Arlene can be traced to a distinct tropical wave, embedded within an area of deep atmospheric moisture, that emerged off the coast of Africa on June 13, 2011. The wave tracked westward across the Atlantic for several days, reaching the western Caribbean Sea in late June. By June 24, it began interacting with the extension of a monsoon trough in the region, generating broad cyclonic flow and scattered convection in conjunction with an upper trough to its northwest. The amplified wave slowly proceeded west-northwestward along Central America, bringing heavy rainfall to the area.

If conditions are favorable, then, often even before the original tornado lifts, another wall cloud and occasionally a new tornado may form downwind of the old wall cloud, typically to the east or the southeast in the Northern Hemisphere (east or northeast in the Southern Hemisphere). This process is known as cyclic tornadogenesis and the resulting series of tornadoes as a tornado family. The rotation of wall clouds is usually cyclonic; anticyclonic wall clouds may occur with anti-mesocyclones or with mesovortices on the leading edge of a QLCS (Again, this relationship is reversed in the Southern Hemisphere).

Map plotting the track of the storm The remnants of Tropical Storm Nora from the West Pacific, which had lasted for two days in the South China Sea, moved west over the Malay Peninsula on November 5. The remnants of this system contributed to the development of a new depression in the central Bay of Bengal on the morning of November 8. The depression intensified as it moved slowly northward, and the India Meteorological Department upgraded it to a cyclonic storm the next day. No country in the region had ever named tropical cyclones during this time, so no new identity was given.

The WMO/ESCAP Panel agreed in May 2004 that in September, tropical cyclones in the Northern Indian Ocean attaining gale-force winds would be given names. Later on October 1, the JTWC issued their first advisory on the storm, classifying it as Tropical Cyclone 03A. Tracking towards the northeast, Onil intensified as convection consolidated around the center of circulation. Roughly 24 hours after being named, the system attained its peak intensity as a severe cyclonic storm with winds of 100 km/h (65 mph) and a barometric pressure of 990 mbar (hPa; 29.23 inHg) according to the IMD with.

Accelerating, Gordon turned towards the northeast. Continued shear prevented the upper-level development needed for typical cyclonic organization, but a strong lower level circulation had formed. Its sustained winds were still only 40 mph (65 km/h), but as the system approached eastern Cuba a gust of 120 mph (192 km/h) was reported. The center crossed near Guantánamo Bay and the storm dumped heavy rainfall as it passed over the eastern portion of the island; even heavier rain fell in Haiti to the west, where 22.94 in (58.27 cm) of rain was recorded at Camp-Perrin.

On October 26, a trough formed over the south Andaman Sea and extended into the southern Bay of Bengal. By October 28, the system consolidated into a depression as it moved northwestward. Steadily intensifying, several ships encountered the storms increasing winds as it moved northward in the Bay. On October 30, it attained gale-force winds and further became a severe cyclonic storm early the next morning. During the evening of October 31, the IST Barisal recorded winds of 130 km/h (80 mph), indicating that the system had acquired a core of hurricane-force winds.

The droplets agglomerate to larger drops, and the swirl of the gas causes cyclonic separation.Malyshkina, M. M., The Structure of Gasdynamic Flow in a Supersonic Separator of Natural Gas, High Temperature (2008, Vol 46, No 1, ISSN 0018-151X). The dry gas continues forward, while the liquid phase together with some slip gas (about 30% of the total stream) is separated by a concentric divider and exits the device as a separate stream. The final section are diffusers for both streams, where the gas is slowed down and about 80% of the feed pressure (depending on application) is recovered.

Extremely Severe Cyclonic Storm Sidr (JTWC designation: 06B) was a tropical cyclone that resulted in one of the worst natural disasters in Bangladesh. The fourth named storm of the 2007 North Indian Ocean cyclone season, Sidr formed in the central Bay of Bengal, and quickly strengthened to reach peak 1-minute sustained winds of 260 km/h (160 mph), making it a Category-5 equivalent tropical cyclone on the Saffir-Simpson Scale. The storm eventually made landfall in Bangladesh on November 15, 2007, causing large-scale evacuations. At least 3,447 deaths have been blamed on the storm, with some estimates reaching 15,000.

Cyclonic Storm Aila on May 24, 2009 (image by NASA) Cyclone Aila struck Sunderban on 25 May 2009, causing damage to field camps and fringe villages bordering the reserve. Breaches in the embankments on the village side have caused large scale flooding, leaving lakhs of people marooned in the area. The field camps were under 12 to 15 feet of water for around seven hours, resulting in soil erosion and damage to staff quarters, generators and bamboo pilling. There was a report of a tiger wandering inside an abandoned cattle shed in a village, which was captured and released back in the wild.

Loch Vennachar last sighted by SS YongalaUnder the command of Captain W.S. Hawkins, Loch Vennachar departed Glasgow in late June 1905 on a routine voyage to Adelaide. She was laden with general cargo including a consignment of 20,000 bricks. On 6 September 1905, Loch Vennachar was overtaken by SS Yongala about 160 miles west of the Neptune Islands and the captains exchanged "all's well" signals."Loch Vennachar was passed on 6th 35 21 south, 133 east; she signalled all well; several gales since from north, changing west south cyclonic." The Times, Thursday, 28 September 1905; pg.

During the 90s, the Peanuts character Pig-Pen appeared in commercials. The “tools on board” idea, “cyclonic” vacuum technology, and the modern easy to use steam cleaner were all the brainchild of Don Sheelen, who pled guilty to fraud in 1989 for falsifying company financial records. The Regina Company declared bankruptcy shortly thereafter and was eventually acquired by Philips Electronics in 1995. Oreck bought the company in 1997, and in 2000, it was sold to the Royal Corporation, the owners of the Dirt Devil brand, which sold the vacuums under the Home Depot brand for a few years.

The 2001 North Indian Ocean cyclone season was fairly quiet, although activity was evenly spread between the Arabian Sea and the Bay of Bengal. There were six depressions tracked by the India Meteorological Department (IMD), which is the official Regional Specialized Meteorological Center for the northern Indian Ocean. The agency also tracked four cyclonic storms, which have maximum winds of at least 65 km/h (40 mph) sustained over 3 minutes. The American- based Joint Typhoon Warning Center (JTWC) tracked an additional storm - Tropical Storm Vamei - which crossed over from the South China Sea at a record-low latitude.

What no one heeded were the warnings of a lowly shipping inspector Henry Piddington, who had lived in the Caribbean and knew all about hurricanes and storms. He wanted the mangroves to be left alone, as they were Bengal’s defensive barrier against nature’s fury and absorbed the initial onslaught of cyclonic winds, waves and tidal surges. The settlement was built with a strand, hotels and homes, but in 1867 the Matla River surged and reduced the city to a "bleached skeleton". In 1862, the Eastern Bengal Railway opened a southward line from what was then known as Beliaghata station to Port Canning.

Hurricane Isabel (2003) as seen from orbit during Expedition 7 of the International Space Station. The eye, eyewall, and surrounding rainbands, characteristics of tropical cyclones in the narrow sense, are clearly visible in this view from space. A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain or squalls. Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane (), typhoon (), tropical storm, cyclonic storm, tropical depression, and simply cyclone.

A hurricane is a tropical cyclone that occurs in the Atlantic Ocean and northeastern Pacific Ocean, and a typhoon occurs in the northwestern Pacific Ocean; in the south Pacific or Indian Ocean, comparable storms are referred to simply as "tropical cyclones" or "severe cyclonic storms". "Tropical" refers to the geographical origin of these systems, which form almost exclusively over tropical seas. "Cyclone" refers to their winds moving in a circle, whirling round their central clear eye, with their winds blowing counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. The opposite direction of circulation is due to the Coriolis effect.

Similarly, as rapidly rotating air flows radially outward near the tropopause, its cyclonic rotation decreases and ultimately changes sign at large enough radius, resulting in an upper-level anti-cyclone. The result is a vertical structure characterized by a strong cyclone at low levels and a strong anti- cyclone near the tropopause; from thermal wind balance, this corresponds to a system that is warmer at its center than in the surrounding environment at all altitudes (i.e. "warm-core"). From hydrostatic balance, the warm core translates to lower pressure at the center at all altitudes, with the maximum pressure drop located at the surface.

The effects of the CP La Niña are different from those of the traditional EP La Niña—e.g., the recently discovered La Niña leads to a rainfall increase over northwestern Australia and northern Murray-Darling basin, rather than over the east as in a conventional La Niña. Also, La Niña Modoki increases the frequency of cyclonic storms over Bay of Bengal, but decreases the occurrence of severe storms in the Indian Ocean overall, with the Arabian Sea becoming severely non-conducive to tropical cyclone formation. The recent discovery of ENSO Modoki has some scientists believing it to be linked to global warming.

A tropical wave exited the coast of Africa and moved westward across the Atlantic before entering the eastern Pacific on October 8\. Despite strong easterly wind shear, the system acquired enough organization to be deemed a tropical depression at 0000 UTC on October 15\. Within a broad cyclonic gyre, the system moved erratically, first drifting south then east-northeast and eventually northwest. Early on October 16, the system briefly intensified into a tropical storm as a convective band wrapped around the circulation, but continued strong shear caused associated convection to dissipate and the system weakened to a tropical depression by 1800 UTC.

How the Great Whirl forms exactly isn't yet fully understood, but the analytical approach of applying Rossby wave theory can explain its basic formation mechanism. By observation and analysis of [Schott and Quadfasel (1982)], the summer monsoon develops suddenly during June–July, and drives westward water flow in the location. Schott and Quadfasel applied first-mode Rossby waves to the water flows, and concluded that “the formation of the Great Whirl is a response to the very strong anti- cyclonic wind-stress curl”. Since the Somali current changes seasonally, the Great Whirl also displays seasonal behaviour in keeping with the monsoon cycle.

Around this time, a new low-pressure area formed to Isbell's northwest over the Gulf in response to a powerful cold-core low over the Mississippi Valley. The cyclonic flow of this second system brought cool, dry air from the north and circulated it into the hurricane. This in turn caused the storm to become asymmetric in structure with radar imagery indicating little to no reflectivity along the western periphery of the hurricane. Surface weather analysis of Hurricane Isbell and the nearby non-tropical low over the Gulf of Mexico at 12:00 UTC on October 14\.

The National Hurricane Center (NHC) initiated Dvorak classifications on the cyclone at 0000 UTC on January 19, assessing a Dvorak number of T2.5, suggesting both tropical and subtropical characteristics. On the same day, the pressure gradient between the storm and the ridge produced gale-force winds. By early on January 20, the storm maintained minimal convection near its center, with its primary rainband revolved in a cyclonic formation around its well-defined center. Later that day, the storm strengthened into a subtropical storm and attained peak winds of , supported by both ship and Hurricane Hunters reports.

There was uncertainty in predictive storm models around this time whether Mekunu would continue to the northwest, or turn to the northeast, although the storm would continue its northwest trajectory for the remainder of its duration. On May 24, Mekunu weakened slightly due to a bout of easterly wind shear, causing the eye to become ragged. However, the storm re-intensified, and the thunderstorms organized into a compact area near the center around the eye. The IMD upgraded Mekunu to an extremely severe cyclonic storm on May 25, estimating peak 3-minute sustained winds of 175 km/h (110 mph).

The lease for Wellshot expired in 1948, so the New Zealand and Australian Land Company had to truck about 30,000 sheep from the property in readiness to allow the station to be cut up for closer settlement. Later the same year the station was hit by a storm and suffered significant damage from cyclonic gales and heavy hail. The manager, Mr MacIntyre, reported the hail tore holes in the iron roofs and was packed to a depth of one foot on the verandah. An unstocked homestead block on the station was sold for £35,000 in 1953.

Around 5:30 p.m. on May 15, a cluster of strong thunderstorms rolled through Southeast Michigan and Southwestern Ontario, causing one tornado touchdown near Bad Axe, Michigan, tracking towards Lake Huron before dissipating. This tornado was detected by radar from numerous Flint and Detroit-area television stations' radar systems as upper level cyclonic rotation. After crossing Lake Huron, the same system once again intensified and a strong F1 tornado touched down in a rural area north of Mitchell, Ontario causing some damage There was also an EF0 tornado in northern Indiana as well as in southern Ohio.

The precursor to Hurricane Frederic emerged as a loosely defined tropical wave off the west coast of Africa late on August 27\. The following day, satellite images indicated that the tropical wave had become more defined, and was beginning to show signs of cyclonic rotation. At 0600 UTC on August 29, the National Hurricane Center (NHC) classified the system as a tropical depression based on observational data from ships nearby in conjunction with satellite images. Upon developing into a tropical cyclone, the depression moved at an unusually rapid pace westward, gradually curving towards the west-northwest and slowly intensifying in ideal conditions.

In late September, a large area of disturbed weather associated with two tropical waves formed just east of the Lesser Antilles. The disturbance drifted very slowly west-northwestward, inhibited by strong wind shear that eventually caused the westernmost wave to dissipate. Albeit weak, an elongated remnant trough, or area of low pressure, persisted for several days, stalling over the extreme eastern Caribbean Sea as a nearby upper-level cyclonic vortex retrograded to its north. By October 5, the trough had drifted northward into a more favorable atmospheric environment over the Virgin Islands, which allowed the lowest pressures to extend to the surface.

The precursor to the Vietnam tropical depression on October 5 Late on July 27, the JMA began to track a weak tropical depression in the open Western Pacific. Later on the following day, the system was unofficially classified as a subtropical depression by the JTWC, when it has been given a low-chance of transitioning to a tropical cyclone. On a marginal environment with cyclonic easterly flow, moderate to strong wind shear and 28–30 °C sea surface temperatures, the system was expected to recurve poleward and be absorbed by a larger extratropical low. The depression, however, dissipated on July 30.

Originating from an area of low pressure over the southern Bay of Bengal in early May 2013, Viyaru slowly consolidated into a depression on May 10. The depression gained forward momentum and attained gale-force winds on May 11 and was designated as Cyclonic Storm Viyaru, the first named storm of the season. Operationally, the system was referred to as Mahasen; however, this was altered in 2014 with the final report and all archived advisories changed to show Viyaru. Owing to adverse atmospheric conditions, the depression struggled to maintain organized convection as it moved closer to eastern India.

Sea-effect snow bands near the Korean Peninsula Sea surface temperature affects the behavior of the Earth's atmosphere above, so their initialization into atmospheric models is important. While sea surface temperature is important for tropical cyclogenesis, it is also important in determining the formation of sea fog and sea breezes. Heat from underlying warmer waters can significantly modify an air mass over distances as short as to . For example, southwest of Northern Hemisphere extratropical cyclones, curved cyclonic flow bringing cold air across relatively warm water bodies can lead to narrow lake-effect snow (or sea effect) bands.

The November 2006 nor'easter was a powerful extratropical cyclone that formed offshore of the Southeastern United States on November 20, bringing heavy rains, high winds, beach erosion, and coastal flooding to the Carolinas and southern New England. In addition, the earliest snowfall ever noted in both Charleston, South Carolina and Savannah, Georgia occurred on the southwest side of this cyclone. Over 10,000 were without power during the storm. No longer a nor'easter, the extratropical cyclone accelerated rapidly across the North Atlantic while rapidly strengthening, becoming a cyclonic storm again by November 25, but this time with hurricane-force sustained winds.

Severe Cyclonic Storm Mora was a moderate but deadly tropical cyclone that caused widespread devastation and severe flooding in Sri Lanka, Andaman and Nicobar Islands, Bangladesh, Myanmar and Northeast India in May 2017. The second named storm of the 2017 annual cyclone season, Mora developed from an area of low pressure over the southeastern Bay of Bengal on May 28. Mora reached peak strength with maximum sustained winds of 110 km/h (70 mph). The cyclone made landfall near Chittagong on the morning of May 30 and steadily weakened, dissipating early in the morning on May 31.

An example is the study of the dynamics of spiral bubble plumes in bubble columns. ECVT is shown to be able to capture the spiral motion of bubble plumes, the structures of large scale liquid vortices and gas holdup distributions. Another example of the application of ECVT in gas-liquid systems is the study of a cyclonic gas- liquid separator, where a gas-liquid mixture enters a horizontal column tangentially and creates a swirling flow field where gas and liquid is separated by centrifugal force. ECVT successfully captures the liquid distribution inside the vessel and the off-centered gas core drifting phenomenon.

Some of the bottom water spreads through a gap to fill the South Sandwich Trench. Because of upwelling the new Weddell Sea Bottom Water turns clockwise west of 20°W and are a mixture of shelf water and a part of the Circumpolar Deep Water that follows the southern part of the gyre to the west. East, another part of the Circumpolar Deep Water mixes with shelf water and may establish a particular source of Weddell Sea Deep Water. In the Weddell Sea Deep Water, there is a 2 gyre cyclonic system inferred and is able to spill over the South Scotia Ridge.

The 1918 Innisfail cyclone was particularly severe and destroyed most of the buildings in the town. A large proportion of the rebuilding which took place during the 1920s and 1930s - a period of prosperity - was done using reinforced concrete to prevent such levels of destruction during future cyclonic events. Investigation and planning for a water supply scheme for Innisfail commenced in 1926. Up until this time the community relied on tank water and water vendors, and despite being one of the wettest towns in Australia in terms of rainfall, there were water shortages during the dry months of the year.

The circulation became better defined as outflow increased, amplified by an anticyclone over the system. Based on the organization, the India Meteorological Department (IMD) classified the low as a depression at 00:00 UTC on November 5\. About six hours later, the IMD upgraded the system to a deep depression, and at 12:00 UTC that day the agency upgraded it to a cyclonic storm, naming it Megh. Earlier that day, the American-based Joint Typhoon Warning Center (JTWC) initiated advisories on the storm as Tropical Cyclone 05A while the storm was about 1,120 km (700 mi) east of Socotra island offshore Yemen.

In early June, a strong pulse of the Madden-Julian Oscillation (MJO) tracked eastwards into the tropical Indian Ocean, leading to increased cloudiness and rainfall across the region. On June 9, the India Meteorological Department (IMD) noted the development of a low-pressure area over the southeastern Arabian Sea, to the north of the Maldives. Early on June 10, a depression formed in the Arabian Sea, just northwest of the Maldives, and the IMD gave the storm the identifier ARB 01. As the system moved northward, it gradually strengthened, becoming a deep depression, before intensifying further into Cyclonic Storm Vayu later that day.

On June 14, Vayu began to weaken, as it tracked slowly westward, away from the Gujarat coastline due to strong wind shear. On June 16, an approaching mid-latitude trough weakened the areas of high pressure centered to the west and northeast, which recurved Vayu sharply to the northeast. Upon weakening further to a cyclonic storm, strong low-level southwesterly flow caused the system to accelerate northeastwards through the break in the blocking high-pressure ridge, back towards the Gujarat coast. At 03:00 UTC on 17 June, Vayu weakened into a deep depression, before weakening further to a depression six hours later.

The storm weakened below major hurricane status 06:00 UTC the following day, and below Category 2 status by 18:00 UTC September 11 as higher wind shear began to erode the core. As the storm was entering an anti- cyclonic loop, Jose was downgraded to a tropical storm at 00:00 UTC on September 15 based on Dvorak estimates which put its wind speed below hurricane strength. At this time the NHC noted that northerly wind shear had kept all significant banding to the southeastern quadrant and the center was to the northwest of most convection.

During September 23, after Rajasthan had remained mainly dry since September 17, the IMD declared that the withdrawal of the southwest monsoon had commenced. Over the next couple of weeks the monsoon gradually withdrew from the Arabian Sea, north-western and central parts of India, before Very Severe Cyclonic Storm Hudhud formed on October 7. After Hudhud had moved northwards and weakened into an area of low pressure, the southwest monsoon withdrew from the rest of India, Sri Lanka and the North Indian Ocean by October 18. During October 18, northeast monsoon rains over Tamil Nadu and neighbouring peninsular India commenced.

Adiabatic cooling occurs when one or more of three possible lifting agents – convective, cyclonic/frontal, or orographic – cause a parcel of air containing invisible water vapor to rise and cool to its dew point, the temperature at which the air becomes saturated. The main mechanism behind this process is adiabatic cooling. As the air is cooled to its dew point and becomes saturated, water vapor normally condenses to form cloud drops. This condensation normally occurs on cloud condensation nuclei such as salt or dust particles that are small enough to be held aloft by normal circulation of the air.

Hurricane Rosa brought widespread flooding to northwestern Mexico and the Southwestern United States in late September 2018, and was the first tropical cyclone to make landfall in Baja California since Nora in 1997. The seventeenth named storm, tenth hurricane, and seventh major hurricane of the 2018 Pacific hurricane season, Rosa originated from an Atlantic tropical wave that crossed the West African coast on September6. The wave proceeded westward across the Atlantic, traversing Central America before entering the Gulf of Tehuantepec on September 22. There, the weather system acquired cyclonic features and became a tropical storm on September 25.

By late on May 29, a weak trough over the Yucatán Peninsula produced a small area of convection over the Yucatán Channel. Convection increased in association with the trough, and the next day a broad envelop of cyclonic turning developed within the system. By May 30, the moisture from the trough extended from Nicaragua through the southeastern Gulf of Mexico, with the greatest area of convection near Cuba. A westward moving tropical wave spawned a broad area of low pressure on May 30, and by May 31 a circulation developed within the system to the southeast of Cozumel, Mexico.

Sir James Dyson (born 2 May 1947) is a British inventor, industrial designer, landowner and entrepreneur who founded Dyson Ltd. Traditionally, he is best known as the inventor of the Dual Cyclone bagless vacuum cleaner, which works on the principle of cyclonic separation. According to the Sunday Times Rich List 2020, he is Britain's richest person with an estimated net worth of £16.2 billion. He served as the Provost of the Royal College of Art from August 2011 to July 2017, and opened a new University, the Dyson Institute of Engineering and Technology, on Dyson's Wiltshire Campus in September 2017.

Dyson vacuum cleaner In the late 1970s, Dyson had the idea of using cyclonic separation to create a vacuum cleaner that would not lose suction as it picked up dirt. He became frustrated with his Hoover Junior's diminishing performance: the dust bag pores kept becoming clogged with dust thus reducing suction. The cyclone idea came from a sawmill that used cyclone technology.Issue: The Journal of Business and Design, vol. 8, no. 1 Partly supported by his wife's salary as an art teacher, and after fifteen years and about 5,127 prototypes, Dyson launched the "G-Force" cleaner in 1983.

Quickly accelerating westward due to a subtropical ridge, Isaac later moved past the Lesser Antilles between Guadeloupe and Dominica by August 23, where it caused numerous mudslides and power outages. Maintaining tropical storm intensity, Isaac later made its first landfall on the southern coast of Haiti early on August 25 as a result of curving around the ridge of high-pressure. There the storm directly killed 24 people, worsening conditions still remaining after the 2010 Haiti earthquake. Isaac later began to curve westwards due to wind patterns which brought it between two opposingly rotating cyclonic systems.

On the evening of 24 February 1875, the ship was still heading south in almost cyclonic conditions with fore, top and mainsails set and the steam engines running at full speed. Flooding rains lashed the entire Queensland coast and Captain Pearce reportedly could not see land or sun. At approximately 7:00 pm, and for reasons undetermined, he altered course and shortly afterwards, at full speed (11 to 12 knots), hit a section of the Great Barrier Reef at low tide north west of Holbourne Island. Gothenburg struck with such force that she was left high up on the reef.

By morning of the 25 February, only the masts were visible protruding from the water, with 14 people clinging to the rigging, where they remained for the next twenty four hours in cyclonic weather. At low tide, Gothenburg sank stern first and the wreck fell apart. However, the remaining starboard lifeboat, which had capsized, was still held by her painter and the rope attached by Cleland. At first light on 26 February the weather eased and the survivors managed to right the boat and bail it out; they prepared a makeshift sail and paddled for the mainland.

Light blue plankton in a wide anti-cyclonic (counter-clockwise) Agulhas ring, off the coast of South Africa. Such eddies, among the largest in the world, are peeled off the Agulhas Current on the eastern edge of the Agulhas Bank. Agulhas rings are large anticyclonic eddies or warm core rings of ocean water that are pinched off the Agulhas Current along the eastern edge of the Agulhas Bank from where they move into the South Atlantic. As the Agulhas Current reaches the east coast of South Africa, large solitary meanders known as Natal pulses form at irregular intervals.

Sweers Island was declared an Aboriginal reserve in 1934. After a cyclonic tidal surge swept the area in 1948, which followed fast on the severe drought that struck in 1946, the Kaiadilt were transferred by missionaries and the Queensland Government to Mornington Island. The uprooting effectively set in place the process of the destruction of both Kaiadilt culture and language since all children were restricted to dormitories, away from their parents and kin, and the transmission of the language and lore was lost. On Mornington Island they lived in a separate zone, in beach humpies facing Bentinck Island.

The depression was declared a deep depression early on October 26, whilst the Joint Typhoon Warning Center designated the depression as Cyclone 04B later that day with wind speeds equivalent to a tropical storm. Later that day, the IMD upgraded the deep depression into a cyclonic storm and named it as Rashmi. Rashmi then reached both its peak one- and three-minute sustained wind speeds, as it made landfall on the Bangladesh coast late on October 26. Early the next day the JTWC issued its final advisory on Rashmi as the IMD downgraded Rashmi to a deep depression.

Cyclonic vortex over Pennsylvania with a trailing squall line A squall line is an elongated line of severe thunderstorms that can form along or ahead of a cold front. The squall line typically contains heavy precipitation, hail, frequent lightning, strong straight line winds, and possibly tornadoes or waterspouts. Severe weather in the form of strong straight-line winds can be expected in areas where the squall line forms a bow echo, in the farthest portion of the bow. Tornadoes can be found along waves within a line echo wave pattern (LEWP) where mesoscale low-pressure areas are present.

Tropical cyclones that occur within the Northern Hemisphere between the anti-meridian and 100°E, are officially monitored by the Japan Meteorological Agency (JMA, RSMC Tokyo). Within the region a tropical cyclone is defined to be a non- frontal synoptic scale cyclone originating over tropical or sub-tropical waters, with organized convection and a definite cyclonic surface wind circulation. The lowest classification used by the Typhoon Committee is a tropical depression, which has 10-minute sustained winds of less than . Should the tropical depression intensify further it is named and classified as a tropical storm, which has winds speeds between .

Hurricane Leslie near its initial peak intensity on 3 October Soon after being re- classified, Leslie moved to the due west under the interactions with the subtropical ridge to the west and a large deep-layer low that formed to the east. On 29 September, the storm turned to the southwest as it embedded to the deep-layer low, and Leslie's deep convection became more concentrated near the center. This signified its transition into a tropical cyclone. Later that day, Leslie developed an anti-cyclonic outflow to its northeast and southeast, and it developed a warm core structure.

The genesis of Tropical Storm Dora can be attributed to a westward-moving tropical wave that emerged off Africa on June 18\. By July 3, the wave passed through the Gulf of Tehuantepec, where broad cyclonic flow began to develop along its axis. Following further organization, the disturbance intensified into a tropical depression by 00:00 UTC on July 4 and further strengthened into Tropical Storm Dora six hours later. The cyclone moved north-northwest and then west-northwest, paralleling the coastline of Mexico under the influence of a subtropical ridge, where landslides and mudslides cut communication to 12 mountain villages.

The Florida Keys and Miami Hurricane of 1906 This hurricane originated on October 4 near Barbados as a "cyclonic perturbation"; however, no closed circulation was evidently associated with the system. Barometric pressures began sinking in Panama as the system drifted westward, and it was considered a tropical storm by October 8. As the storm headed west, it rapidly strengthened; the storm became a hurricane on October 9 and intensified into a major hurricane on October 10. As it began to curve northwestward, the hurricane made landfall in Nicaragua, and weakened to a tropical storm on October 11.

The frontal trough outran the system, and the building ridge to Allison's north forced the extratropical depression turned to the south and southwest. After executing a cyclonic loop over Texas, the ridge to the north began to erode, allowing Allison to track northeast and out of the state. Its circulation dissipated on July 1, but the remnants retained some organization, and continued to the northeast. On July 3 and July 4, the shortwave that influenced the remnants of Allison accelerated ahead of the storm, causing Allison to become stationary over the borders of Kentucky, Illinois, and Indiana.

If a low-pressure area forms in the atmosphere, air tends to flow in towards it, but is deflected perpendicular to its velocity by the Coriolis force. A system of equilibrium can then establish itself creating circular movement, or a cyclonic flow. Because the Rossby number is low, the force balance is largely between the pressure-gradient force acting towards the low- pressure area and the Coriolis force acting away from the center of the low pressure. Instead of flowing down the gradient, large scale motions in the atmosphere and ocean tend to occur perpendicular to the pressure gradient.

A float trajectory and the corresponding data. Many results have been achieved thanks to these floats, on the global mapping of the ocean characteristics, or for example how floats systematically shoal (upwell) as they approach anticyclonic meanders and deepen (downwell) as they approach cyclonic meanders.Particle pathways in the Gulf Stream, T. Rossby A.S.Bower P-T Shaw, Bulletin American Meteorological Society, vol 66,n 9 On the left is a typical set of data from a RAFOS float. Today, such floats remain the best way to systematically probe the ocean's interior, since it is automatic and self- sufficient.

The 1993 Storm of the Century (also known as the 93 Superstorm, The No Name Storm, or the Great Blizzard of '93/1993) was a large cyclonic storm that formed over the Gulf of Mexico on March 12, 1993. The storm was unique and notable for its intensity, massive size, and wide-reaching effects; at its height, the storm stretched from Canada to Honduras. The cyclone moved through the Gulf of Mexico and then through the eastern United States before moving on to eastern Canada. The storm eventually dissipated in the North Atlantic Ocean on March 15.

Well-designed cyclonic separators can be very efficient in removing even fine particulates, and may be operated continuously without requiring frequent shutdowns for maintenance. Fabric filters or baghouses are the most commonly employed in general industry. They work by forcing dust-laden air through a bag-shaped fabric filter leaving the particulate to collect on the outer surface of the bag and allowing the now clean air to pass through to either be exhausted into the atmosphere or in some cases recirculated into the facility. Common fabrics include polyester and fiberglass and common fabric coatings include PTFE (commonly known as Teflon).

Euroclydon (or in Latin: Euroaquilo) is a cyclonic tempestuous northeast wind which blows in the Mediterranean, mostly in autumn and winter. It is the modern Gregalia (Gregale) or Levanter. From the Greek word eurokludōn [εὐροκλύδων], from Euros (Eurus, meaning east wind) and either the Greek word akulōn (akylōn, meaning north wind), or kludon (meaning a surging wave from the verb kluzo meaning to billow) or the Latin word aquilō (aquilon). Euroclydon is not to be confused with the term Nor'easter, which is a separate storm system that forms in the northeastern portion of the United States.

Under the influence of an upper-air cyclonic circulation, a low-pressure area formed over the Andaman Sea on October 6. It slowly consolidated and was upgraded to a depression by the India Meteorological Department (IMD) on October 7. While over open waters, the depression continued to encounter a favorable environment, and a tropical cyclone formation alert (TCFA) was issued by the Joint Typhoon Warning Center (JTWC), followed by IMD upgrading the storm into a deep depression. In the early hours of October 8, the JTWC started issuing its advisories for the system as it recorded tropical storm winds at the storm's centre.

Cristobal, beginning to lose its convective activity, began to slowly weaken as the day went on while it pushed further southeast into the Mexican state of Campeche. At 16:00 UTC on June 4, Cristobal was downgraded to tropical depression status, with its satellite appearance continuously degrading. The depression lost most of its banding features due to prolonged interaction with land, and most of its convection was limited to the northeastern quadrant of the circulation. Then near the northwestern tip of Guatemala, Cristobal made a cyclonic loop, and moved back across the Yucatán Peninsula, resulting in it getting better organized on satellite imagery.

At four, Fairway began with a one length win over three rivals in the Burwell Stakes at Newmarket and then took the Rous Memorial Stakes at Royal Ascot. At the July meeting at Newmarket he won the Princess of Wales's Stakes to take his winning run to six. In his next race he started favourite for the Eclipse Stakes but failed to show his best form and was beaten four lengths by Royal Minstrel. He was then off the course for three months before returning in October to win the Champion Stakes for the second time from Cyclonic.

Tropical Depression Six developed offshore of the Southeastern United States on September 22 from the merger of a surface trough, a tropical wave, and a cold front. The depression quickly intensified and was upgraded to Tropical Storm Danielle six hours later. An approaching trough caused a northeastward movement, but later a high pressure system forced the storm to northwestward, which caused Danielle to execute a small anti-cyclonic loop on September 23–24. While offshore of North Carolina on September 25, Danielle reached its peak intensity as a moderately strong tropical storm with maximum sustained winds of .

On 31 May, an area of low pressure developed over the Eastern Arabian Sea and remained as a well marked low pressure area over the same region till the evening. It strengthened into a depression over east-central and south-east Arabian Sea in the early morning the of 1 June when it was centred about 340 km south-west of Goa, 630 km south-southwest of Mumbai and 850 km south-southwest of Gujarat. alt=Infrared satellite animation of Nisarga intensifying.Around noon on 2 June, the deep depression intensified into a cyclonic storm and thereby receiving the name Nisarga.

In the first week of December, a westward-moving upper-level low led to the formation of a broad surface trough well to the east of the northern Lesser Antilles. With a strong ridge to its northeast, the trough tracked slowly westward, producing scattered convection and some cyclonic turning. On December 8 convection began to persist in association with the trough and an upper-level low. Early on December 9, officials at the Tropical Prediction Center began classifying the system using the Hebert- Poteat technique, and several tropical cyclone forecast models anticipated its development of tropical characteristics.

Zoe subsequently rapidly intensified in very favorable conditions as it continued to move west- southwest towards the Solomon Islands. The system subsequently became a Category 5 tropical cyclone on both the Australian tropical cyclone intensity scale and the Saffir-Simpson hurricane wind scale on December 27. The system subsequently affected the Solomon Islands Temotu Province during that day, before it peaked with 10-minute sustained wind speeds of . As the system peaked, it performed a small clockwise cyclonic loop within the vicinity of Tikopia island, as a result of the steering flow over the cyclone becoming weak and variable.

Tropical Storm Earl near its second landfall on August 5 While Earl was over the Yucatán Peninsula, it produced wind gusts of 53 mph (85 km/h) in Ciudad del Carmen, Campeche. The interaction between Earl and a large low-level cyclonic gyre produced torrential rainfall across southern Mexico. Rainfall in Mexico peaked at in Manzanillo, and in Huauchinango. A station in Chiapas recorded about 7 in (180 mm) of rainfall. The rains caused landslides across the mountainous areas of eastern Mexico that buried areas in several feet with mud, killing at least 54 people, including 18 children.

Typhoon Parma (left) and Melor (right) interacting with each other in the Philippine Sea on October 6, 2009. The Fujiwhara effect, sometimes referred to as the Fujiwara effect, Fujiw(h)ara interaction or binary interaction, is a phenomenon that occurs when two nearby cyclonic vortices move around each other and close the distance between the circulations of their corresponding low-pressure areas. The effect is named after Sakuhei Fujiwhara, the Japanese meteorologist who initially described the effect. Binary interaction of smaller circulations can cause the development of a larger cyclone, or cause two cyclones to merge into one.

In late April a circulation began to develop within a monsoon depression in the South China Sea, forming into a tropical depression on April 27 when it was to the west of Manila. It strengthened as it moved to the west and became Tropical Storm Leo the next day. The storm then performed a cyclonic loop off the Vietnamese coast and began to intensify, becoming a typhoon as it moved to the northeast. As it moved towards China under a high- level ridge Typhoon Leo rapidly intensified to its peak with 205 km/h (125 mph) winds.

The fire crested Queen's Canyon and winds from the west nearing 65 mph gusts (the cyclonic winds of the collapsing pyrocumulus cloud from the fire storm) pushed the fire down the slope and into the Mountain Shadows, Oak Valley Ranch, and Peregrine neighborhoods. The fire moved about 2 miles per hour towards the city. Embers were carried by the wind to a distance of up to a quarter mile away and caused multiple small spot fires of brush and low vegetation. Once the fire crossed into neighborhoods, the fuel for the fire was houses, and the fire spread house-to-house.

DCVZ conditions form when a low-level moist, southeasterly flowing air mass meets the Palmer Divide, a ridge that extends east of the Colorado Front Range. If the moist air lifts over the ridge and meets northwesterly winds originating in the Rocky Mountain foothills, winds may converge to create enhanced cyclonic vorticity. A study conducted between 1981 and 1989 demonstrated that the DCVZ formed on one-third of all days during the convective season (May through August).Szoke, E.J., and J.A. Augustine, 1990: An examination of the mean flow and thermodynamic characteristics of a mesoscale flow feature: The Denver Cyclone.

On December 14, the IMD reported that a depression had developed within the Intertropical Convergence Zone over the southern Bay of Bengal. Over the next day the system moved north-westwards and gradually developed into a cyclonic storm, as the JTWC initiated advisories on the depression and assigned it the designation Tropical Cyclone 04B. The system subsequently continued to intensify, as it recurved and moved through a break in the subtropical ridge of high pressure. Late on December 16, the JTWC reported that the cyclone had peaked as a tropical storm, with 1-minute wind speeds of 85 km/h (50 mph).

The 1993 North Indian Ocean cyclone season was the quietest on record in the basin, with only four tropical disturbances. There are two main seas in the North Indian Ocean – the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west. The India Meteorological Department (IMD) issued advisories for the systems in its official capacity as the local Regional Specialized Meteorological Center, while the Joint Typhoon Warning Center also issued advisories for two of the storms on an unofficial basis. Of the five disturbances tracked by the IMD, two intensified into cyclonic storms.

They argued that the concrete exterior would be less expensive to maintain, would save on fire insurance costs, and would better withstand cyclonic weather. The Department of Public Works approved the amended design and in mid-1929 extended the loan to . Mossman Hospital in the Spanish Mission style, 1935 Spanish Mission style architecture was popularised in Australia from the late 1920s. The emphasis on wide colonnaded or arcaded verandahs and white stuccoed exterior walls set against lush gardens (as popularised in the Californian version of the style), translated well to Australia's warm climate, particularly in Queensland.

During that time, atmospheric conditions over the Gulf of Mexico rapidly improved; a preexisting belt of strong wind shear, which would have inhibited further cyclonic strengthening, disintegrated coincident with Hilda's passage of the gulf. Rapid intensification ensued on October 1, and by 0600 UTC that day Hilda became a major hurricane. Twelve hours later, the hurricane reached its peak intensity with maximum sustained winds of 150 mph (240 km/h) and a minimum barometric pressure of 941 mbar (hPa; 27.79 inHg) based on reconnaissance flights. During this phase the storm was centered roughly south of New Orleans, Louisiana.

As the storm neared the Indian coastline, an eye developed and the storm strengthened into the equivalent of a major hurricane with winds reaching 185 km/h (115 mph). The IMD assessed the storm to be a very severe cyclonic storm at this time, with winds up to 165 km/h (105 mph) and a barometric pressure of 958 mbar (hPa). After slightly weakening early on June 9, 03A re-strengthened, attaining its peak intensity with winds of 195 km/h (120 mph). Then it made landfall near Porbandar in the Indian state of Gujarat between 0100 and 0200 UTC.

By that time, an eye had developed in the center, and the previously large wind field had contracted. Upon attaining hurricane status, Olga was tracking northwestward due to an approaching trough. The eye steadily became better defined as outflow increased, and on November 27, Olga attained peak winds of 90 mph (150 km/h), along with a minimum pressure of 973 mbar (28.73 inHg). While at peak intensity, the hurricane executed a double loop about 455 mi (730 km) east of Bermuda, due to interaction with a larger cyclonic circulation that was isolated from the westerlies.

In general, the farther inland from the Mediterranean Sea a given part of the country lies, the greater are the seasonal contrasts in temperature and the less rainfall. Atmospheric pressures during the summer months are relatively uniform, whereas the winter months bring a succession of marked low pressure areas and accompanying cold fronts. These cyclonic disturbances generally move eastward from over the Mediterranean Sea several times a month and result in sporadic precipitation. Most of the East Bank receives less than of rain a year and may be classified as a dry desert or steppe region.

In 1967, with the slogan "Think Big, Vote Small", he was elected Mayor of the Gold Coast, holding office till 1973. He was re-elected from 1976 to 1978. Like many politicians during this period, a time prior to the existence of conflict of interest laws, he saw no conflict between his duties as Mayor and his opportunities as a property developer. After a season of cyclonic storms which battered the Gold Coast in 1967, Small was instrumental in promoting this area as a family holiday destination through widespread appearances and promotions of the Surfers Paradise Meter Maids, established in 1965, to attract tourists back to the area.

In the Northern Hemisphere, the tropical upper tropospheric trough (TUTT) normally occurs between May and November, with peak activity between July and September. James Sadler suggested a revised model for the TUTT during the early part of the typhoon season in the western Pacific. Both Sadler and Lance Bosart have shown that the tropical upper tropospheric trough cyclonic cells are caused by the mid-latitude disturbance riding around the western side of the tropical upper tropospheric trough when the subtropical ridge to its south is quite weak. In the north Atlantic, the TUTT is characterized by the semi- permanent circulation pattern that forms in the North Atlantic between August and November.

In September 1936, returning from the mission to Greenland to deliver scientific material to Victor's mission (which had just traversed the ice sheets in 50 days) and after carrying out a survey mission, Pourquoi-Pas ? IV stopped at Reykjavík to re-provision with fuel on 13 September. They set out for Saint- Malo two days later, on 15 September, but on 16 September the ship was caught in a violent cyclonic storm and lost on the reefs of Álftanes at Mýrar. 23 of the crew were lost in the wreck and 17 survivors died before rescue came, leaving only one survivor, Eugène Gonidec, master steersman.

This process occurs when one or more of three possible lifting agents—cyclonic/frontal, convective, or orographic—causes air containing invisible water vapor to rise and cool to its dew point, the temperature at which the air becomes saturated. The main mechanism behind this process is adiabatic cooling. Atmospheric pressure decreases with altitude, so the rising air expands in a process that expends energy and causes the air to cool, which makes water vapor condense into cloud. Water vapor in saturated air is normally attracted to condensation nuclei such as dust and salt particles that are small enough to be held aloft by normal circulation of the air.

Frontal and cyclonic lift occur in their purest manifestations when stable air, which has been subjected to little or no surface heating, is forced aloft at weather fronts and around centers of low pressure. Warm fronts associated with extratropical cyclones tend to generate mostly cirriform and stratiform clouds over a wide area unless the approaching warm airmass is unstable, in which case cumulus congestus or cumulonimbus clouds will usually be embedded in the main precipitating cloud layer. Cold fronts are usually faster moving and generate a narrower line of clouds which are mostly stratocumuliform, cumuliform, or cumulonimbiform depending on the stability of the warm air mass just ahead of the front.

At the time, the agency anticipated significant strengthening of the cyclone, forecasting it to attain winds in excess of 155 km/h (100 mph). The India Meteorological Department (IMD) followed suit hours later, designating the system as Depression BOB 01 and soon upgrading it to a deep depression. Viyaru (top) as a depression off the coast of Sumatra, along with Moderate Tropical Storm Jamala to its south, on May 10 Situated to the south of a subtropical ridge, the storm tracked west-northwestward to northwestward. Early on May 11, the IMD upgraded the system to a cyclonic storm and assigned it the name Mahasen.

Turning more to the north, the depression intensified into a deep depression and later cyclonic storm on October 27, reaching peak winds of 65 km/h (40 mph); the JTWC also classified it as Tropical Cyclone 02B. That day, the wind shear increased, although the convection was able to increase over the center and organize into a comma- shaped rainband. Early on October 28, the storm made landfall in southern Bangladesh near Mongla, by which time the wind shear had displaced much of the convection to the northeast. It rapidly weakened over land, degenerating into a remnant low over northern Bangladesh early on October 29.

As the nearby ridge translated eastward, the depression was able to move more steadily to the east and later to the northeast, passing northwest of the Andaman Islands on May 18. On the next day, the deep depression re-intensified into a cyclonic storm, reaching a secondary peak with winds of 85 km/h (50 mph). At about 10:00 UTC on May 19, the storm made landfall close to Kyaukpyu, Ramree Island, in western Myanmar. The storm rapidly weakened into a depression and later degenerated into a low pressure area on May 20, and was no longer discernible on satellite imagery by the next day.

Ancient Polynesians and others who inhabited the tropical Pacific before the Europeans arrived, knew of and feared the hurricanes of the South Pacific. They were keen and accurate observers of nature and developed various myths and legends, which reflected their knowledge of these systems. For example, the people of Mangaia in the Cook Islands had over 30 different names for the wind direction including Maoaketa, which indicated that a cyclonic storm existed to the west of the island. During the 1700s, Captain James Cook conducted three voyages within the Pacific Ocean and it is thought that he didn't collect any information about or experience any tropical cyclones.

Cyclonic Storm Phyan developed as a tropical disturbance to the southwest of Colombo in Sri Lanka on November 4, 2009. Over the next couple of days, the disturbance gradually developed before weakening as it made landfall on Southern India on November 7. After the disturbance emerged into the Arabian Sea, it rapidly became more of a concern to the India Meteorological Department (IMD) reporting early on November 9 that the disturbance had intensified into a Depression, and designated it as Depression ARB 03 whilst the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert. Later that day, the JTWC designated the system as Cyclone 04A.

Under specific circumstances, upper level cold lows can break off from the base of the Tropical Upper Tropospheric Trough (TUTT), which is located mid-ocean in the Northern Hemisphere during the summer months. These upper tropospheric cyclonic vortices, also known as TUTT cells or TUTT lows, usually move slowly from east-northeast to west-southwest, and their bases generally do not extend below in altitude. A weak inverted surface trough within the trade wind is generally found underneath them, and they may also be associated with broad areas of high-level clouds. Downward development results in an increase of cumulus clouds and the appearance of a surface vortex.

The citation consists of a maroon ribbon with four white vertical stripes surrounded by a bronze metallic frame. The four white stripes represent the four emergency service agencies that existed at the time of the event - Queensland Fire and Rescue Service, Queensland Ambulance Service, Emergency Management Queensland and the Queensland Police Service. The cyclone symbols on both sides of the citation represents the time line of cyclonic events occurring between Cyclone Tasha in December 2010 and Cyclone Yasi in February 2011. The swirls on the top and bottom of the citation represents waves associated with the mass flooding which occurred throughout many parts of Queensland.

Due to its strength and insulating qualities, concrete construction proved highly suitable to the tropical climate and cyclonic conditions experienced in North Queensland and in later decades dominated its building industry. Bolands situated on the corner of Lake and Spence Streets, Cairns, 1925 The construction work, carried out during 1912 and 1913, was a major undertaking that elicited interest from the local press. The swamp at the site was drained and filled but due to the unstable nature of the ground the building sat on a floating foundation laid with girders rather than traditional piles. The walls, floors, internal columns and decorative details of the facade were cast in moulds.

On August 28, a tropical wave exited the west coast of Africa, which moved westward across the Atlantic Ocean without development. On September 2, an area of convection, or thunderstorms, developed along the northern portion of the wave, but was eventually absorbed into Tropical Storm Gabrielle north of Puerto Rico. The wave continued westward through the Caribbean Sea into a large area of cyclonic flow at the surface, which extended across Central America into the eastern Pacific. Around September 9, the broad system developed two areas of disturbed weather - one in the eastern Pacific would become Hurricane Manuel, and the other developing over the northwestern Caribbean.

Throughout October 11 and 12, the depression slowly executed a tight cyclonic loop over the northwestern Caribbean Sea. It finally organized into a tropical storm and was given the name Isbell by 00:00 UTC on October 13 after completing the loop and acquiring a north-northeast trajectory. Throughout October 13, marked intensification of the cyclone occurred. Over a 24‑hour span, ending at 18:00 UTC, its central pressure fell from 1005 mb (hPa; 29.68 inHg) to 979 mb (hPa; 28.91 inHg) which was reflected in Isbell's winds more than doubling from 35 mph (55 km/h) to 90 mph (150 km/h).

The tropical storm continued to steadily intensify, with more ship reports indicating a cyclonic circulation in the area. By 2000 UTC on October 17, the disturbance attained a minimum central pressure of 993 mbar (hPa; 29.33 inHg), with maximum sustained winds of 70 mph (110 km/h). At 0000 UTC on October 18, the tropical storm was analyzed to have attained hurricane strength in the vicinity of the Swan Islands as it began to move towards the north-northwest. The ship S.S. Atenas observed the hurricane at 1700 UTC later that day, reporting an eye associated with the storm and a minimum pressure of 974 mbar (hPa; 28.77 inHg).

Each year before the onset of monsoon that is 15 April to 15 July and also after its withdrawal that is 15 September to 15 December, there is always a distinct possibility of the cyclonic storm to develop in the north Arabian Sea. Cyclones form in the Arabian sea often results in strong winds and heavy rainfall in Pakistan's coastal areas. However tornadoes mostly occur during spring season that is March and April usually when a Western Disturbance starts effecting the northern parts of the country. It is also speculated that cycles of tornado years may be correlated to the periods of reduced tropical cyclone activity.

Emissions such as NOx, SOx and volatile organic compounds from pellet burning equipment are in general very low in comparison to other forms of combustion heating. A recognized problem is the emission of fine particulate matter to the air, especially in urban areas that have a high concentration of pellet heating systems or coal or oil heating systems in close proximity. This PM2.5 emissions of older pellet stoves and boilers can be problematic in close quarters, especially in comparison to natural gas (or renewable biogas), though on large installations electrostatic precipitators, cyclonic separators, or baghouse particle filters can control particulates when properly maintained and operated.

A European windstorm is a severe cyclonic storm that moves across the North Atlantic towards northwestern Europe in the winter months. These storms usually move over the north coast of the United Kingdom, towards Norway but can veer south to affect other countries including Ireland, France, Belgium, the Netherlands, Denmark, Sweden, Austria, Germany, Czech Republic, Slovakia, Slovenia, Switzerland, and Poland. As these storms can generate hurricane-force winds (and sometimes even winds at the strength of major hurricanes), they are sometimes referred to as hurricanes, even though few originate as tropical cyclones. These storms rank as the second highest cause of global natural catastrophe insurance loss (after US hurricanes).

Very Severe Cyclonic Storm Lehar (Hindi: लहर meaning "wave") was a tropical cyclone that primarily affected the Andaman and Nicobar Islands and the Indian state of Andhra Pradesh. Lehar was the second most intense tropical cyclone of the 2013 season, surpassed by Cyclone Phailin, as well as one of the two relatively strong cyclones that affected Southern India in November 2013, the other being Cyclone Helen. The origins of Lehar can be tracked back to an area of low pressure that formed in the South China Sea on 18 November. The system slowly drifted westwards and entered the Bay of Bengal, where it quickly consolidated into a depression on 23 November.

A tropical wave moved off the coast of Africa on August 24, tracking westward at approximately 14 mph (23 km/h) with no associated deep convection and a weak low-level inverted-V curvature. Initially difficult to locate on satellites, the wave axis tracked through a moist environment and developed an area of scattered thunderstorms. By August 25 visible satellite imagery indicated broad cyclonic turning just north of the Intertropical Convergence Zone. The wave continued to develop moderate to strong convection, and on August 27 a 1012 mbar (hPa; 29.88 inHg) low pressure area developed about 830 mi (1,340 km) west-southwest of Praia, Cape Verde.

A tropical depression formed over the Gulf of Honduras around 12:00 UTC on June 4\. The system intensified into a tropical storm and reached winds of 50 mph (85 km/h) before striking near Belize City early on June 5\. Once inland, it executed a cyclonic loop across the Mexican states of Guatemala and Chiapas before re-emerging into the Gulf of Honduras. The cyclone had weakened to a tropical depression while over land, but it restrengthened once offshore again and became a Category 1 hurricane with winds of 80 mph (130 km/h) before making landfall in extreme northern Belize early on June 9\.

A tropical wave moved off the western coast of Africa on June 18 and continued westward across Central America and into the eastern Pacific by June 29\. It subsequently interacted with a large cyclonic gyre, leading to an increase in convective activity and the formation of an area of low pressure. Following satellite and microwave data, the disturbance was upgraded to a tropical depression at 1200 UTC on July 4\. Initially, moderate easterly shear prevented much organization as the system tracked west-northwest; however, a reprieve in upper-level winds by 0000 UTC on July 5 allowed the depression to intensify into Tropical Storm Erick as convective bands gained more curvature.

On October 30, convection increased over the low-level circulation of what was left to Nicholas, and the National Hurricane Center indicated a potential for tropical or subtropical development as it moved towards warmer waters. The system executed a small cyclonic loop, and on October 31 the system organized into a tropical low. It turned westward towards a non-tropical low, and on November 1 the remnants of Nicholas was absorbed by the low. On November 1, convection increased in the complex system that absorbed the remnants of Nicholas, and the National Hurricane Center indicated the system could develop into a tropical or subtropical cyclone at any time.

In early January 2016, a stationary front spanned across the western Caribbean, spawning a non-tropical low along its boundary over northwestern Cuba by January 6. The low moved northeast ahead of the subtropical jet stream the following day, when its interaction with a shortwave trough produced a cyclonic disturbance at the lower atmospheric levels northeast of the Bahamas. This system proceeded northeast toward Bermuda, where unfavorable atmospheric conditions such as strong wind shear, low sea surface temperatures, and dry air initially inhibited tropical or subtropical cyclone formation. The system featured a large field of gale-force winds, with maximum sustained winds of 60–65 mph (95–100 km/h).

A period of weeks or months following the belt's disappearance, a white spot forms and erupts dark brownish material which is stretched into a new belt by Jupiter's winds. The belt most recently disappeared in May 2010. Another characteristic of the SEB is a long train of cyclonic disturbances following the Great Red Spot. Like the NTropZ, the STropZ is one of the most prominent zones on the planet; not only does it contain the GRS, but it is occasionally rent by a South Tropical Disturbance (STropD), a division of the zone that can be very long-lived; the most famous one lasted from 1901 to 1939.

The Joint Typhoon Warning Center classified the disturbance as a tropical cyclone when the storm continued to intensify. The storm's motion was influenced primarily by a nearby subtropical ridge, forcing the system to take a north-northeasterly track. Cyclone Mora intensifying over the Bay of Bengal on May 29 Cloud tops over southeastern Bangladesh exceeded 15.3 km (9.5 miles), and over the Bay of Bengal cloud tops reached almost 16 km (9.9 miles). Shortly before landfall, the storm reached its peak intensity as a severe cyclonic storm with winds of 70 mph (110 km/h) and a minimum central pressure of 978 hPa (mbar).

Vayu weakened to Category 1-equivalent tropical cyclone status at 12:00 UTC, as the loose central convection expanded to leave a ragged eye 55 km (35 mi) in diameter. Vayu's slow westward track through the weak competing steering environment over the northern Arabian Sea brought the system into an environment of high easterly vertical wind shear. The majority of deep convection to become confined to the cyclone's southern quadrants, causing the system to weaken to a severe cyclonic storm at 00:00 UTC on 16 June. An approaching mid-latitude trough weakened the areas of high pressure centred to the west and northeast, Vayu recurved sharply to the northeast.

As Vayu was initially forecast to make landfall as a very severe cyclonic storm, the potential for major impacts prompted significant preparation measures in the state. Beginning on the morning of 12 June, the Indian government evacuated approximately 300,000 people living in coastal regions of Gujarat to 2000 shelter homes, as well as 10,000 people from the nearby island of Diu. All schools and colleges in the area were also closed to safeguard students and staff. All flights at airports in Porbandar, Diu, Bhavnagar, Keshod and Kandla were grounded from midnight local time on 13 June, and 77 train services cancelled and 38 others shortened.

Guided by an anticyclone to its north and a cyclonic circulation to its south, the hurricane continued west-southwestward over the subtropical waters of 30° N, and presented a well-defined eye on October 2. On the next day it strengthened to attain major hurricane status, and on October 4 Hurricane Kate reached a peak intensity of 125 mph (205 km/h) while located 650 mi (1,050 km) east of Bermuda. Shortly after peaking, the western portion of the central dense overcast, or the area of high, thick clouds around the eye, began to deteriorate, and Hurricane Kate started to weaken. On October 5, the storm dropped below major hurricane status.

Early on November 9, the center of Megh passed 57 km (36 mi) north of Cape Guardafui, and further land interaction with Somalia to the south increasingly degraded the storm's structure. At 00:00 UTC that day, Megh weakened into a very severe cyclonic storm. After passing just north of Somalia, Megh progressed westward into the Gulf of Aden, the waterway between Somalia and the Arabian Peninsula. This marked the first time on record when two storms entered the body of water in the same year. By 12:00 UTC on November 9, the center was beginning to become exposed from the convection due to the unfavorable conditions.

During May 31, an area of low pressure developed over the south-eastern Arabian Sea and remained as a well marked low pressure area over the same region until the evening. It strengthened into a depression over the east-central and south-east Arabian Sea in the early morning of June 1 when it was centered about 340 km south- west of Goa, 630 km south-southwest of Mumbai and 850 km south-southwest of Gujarat. It gave nearly 400 mm of extremely heavy rain at Kavaratti, Lakshadweep. On June 2, around noon, the prevailing deep depression intensified into a cyclonic storm thereby receiving the name Nisarga.

On September 19, a depression formed over the east central Bay of Bengal, receiving the designation BOB 07. Soon afterward, the JTWC has issued a Tropical Cyclone Formation Alert (TCFA). Early on September 20, the storm intensified into a deep depression over the west central Bay of Bengal. The system intensified further, becoming Cyclonic Storm Daye later that day, while situated over the northwestern Bay of Bengal. Early on September 21, Daye made landfall on south Odisha, also impacting the adjoining north Andhra Pradesh coast near Gopalpur, during the morning, local time, resulting in heavy rains and strong winds of 65 to 75 km/h in various districts in the regions.

Despite the unfavorable air pattern, the tropical disturbance gradually organized as it moved westward. Due to the large-scale circulation pattern of Tropical Storm Roger, Tip's precursor moved erratically and slowly executed a cyclonic loop to the southeast of Chuuk. A reconnaissance aircraft flight into the system late on October 4 confirmed the existence of a closed low-level circulation, and early on October 5, the Joint Typhoon Warning Center (JTWC) issued its first warning on Tropical Depression Twenty-Three-W. 220px While executing a loop near Chuuk, the tropical depression intensified into Tropical Storm Tip, though the storm failed to organize significantly due to the influence of Tropical Storm Roger.

The 2016–17 North American winter refers to winter in North America as it occurred across the continent from late 2016 through early 2017. During the winter, a weak La Niña was expected to influence weather conditions across the continent. Several notable events occurred during the season, including a potent winter storm that affected the East Coast of the United States in early January, the second-largest winter tornado outbreak on record later that month, and an unusually warm February. In addition, towards the end of the season, a large cyclonic storm system that caused a large tornado outbreak, flooding, and a potent blizzard in the heart of the country.

Toward the end of May 2007, the monsoon trough spawned a low pressure area in the eastern Arabian Sea. By May 31, an organized tropical disturbance was located about 645 km (400 mi) south of Mumbai, India, with cyclonic convection, or thunderstorm activity, and a well- defined mid-level circulation. The disturbance initially lacked a distinct low-level circulation; instead it consisted of strong divergence along the western end of a surface trough of low pressure. A favorable upper-level environment allowed convection to improve, and by late on June 1, the system developed to the extent that the India Meteorological Department (IMD) classified it as a depression.

It tracked westward along the southwestern periphery of a mid-level ridge over southern India. Convection continued to organize, and early on June 2, the Joint Typhoon Warning Center (JTWC) classified the storm as Tropical Cyclone 02A, about 685 km (425 mi) southwest of Mumbai. Upon first forming, the system contended with the entrainment of dry air to the northwest of the storm, which was expected to limit intensification. The storm steadily intensified, and early on June 2 the IMD upgraded it to deep depression status. Later in the day the IMD classified the system as Cyclonic Storm Gonu about 760 km (470 mi) southwest of Mumbai, India.

While Chapala encountered less favorable conditions after leaving Socotra, it maintained much of its intensity; upon entering the Gulf of Aden on 2 November, it became the strongest known cyclone in that body of water. Chapala brushed the northern coast of Somalia, killing tens of thousands of animals and wrecking 350 houses. Ahead of the cyclone's final landfall, widespread evacuations occurred across southeastern Yemen, including in areas controlled by al-Qaeda, amid the country's ongoing civil war. Early on 3 November, the storm made landfall near Mukalla, Yemen, as a very severe cyclonic storm and the strongest storm on record to strike the nation.

Cyclone Agni at its closest approach to the equator After reaching peak intensity, an increase in wind shear caused the eye to disappear, and the convection decreased significantly. On December 1, the IMD estimated Agni weakened to cyclonic storm status, around which time the center became exposed from the convection. The cyclone continued its steady weakening continued due to the wind shear, the presence of dry air, and cooler water temperatures, and by December 2, the IMD downgraded Agni to depression status, which was its final warning on the system. As it approached the coast of Somalia, it turned westward due to the building of a ridge over Saudi Arabia.

The system was last noted during December 6, as it moved into TCWC Wellington's area of responsibility and transitioned into a mid latitude low pressure system within 12 hours. During December 10, the FMS reported that Tropical Disturbance 03F had developed about to the northeast of Honiara in the Solomon Islands. However, the system had no definite low level circulation center, while atmospheric convection surrounding the system was confined to the north quadrant of the disturbance. As a result, the system was last noted during the next day, with the FMS speculating that a cyclonic circulation to the northwest of 03F might have absorbed the disturbance.

Despite weak steering currents, the system started what was initially thought to be a westward drift, though just a few hours later was found to be towards the northwest. A small cyclone, a burst of deep convection formed at around the same time, and was said could have produced tropical storm-force winds. Continuing its slow, northwestward track under the weal steering currents of a weak mid-level ridge to its north, and a broad cyclonic circulation to its southwest, it was upgraded to Tropical Storm Lester at 1800 UTC on October 12. Originally, it was unclear whether the center of circulation would remain slightly offshore, or move inland.

Executing a slow turn to the north and then the northwest, Gordon made two more landfalls, on eastern Jamaica and eastern Cuba. As Tropical Storm Gordon made its fourth landfall crossing the Florida Keys, it interacted with a cyclone in the upper troposphere and a series of cyclonic lows which lent the storm some sub- tropical characteristics. After a few days as an unusual hybrid of a tropical and a subtropical system in the Gulf of Mexico, the storm re-claimed its tropical storm status and it made another landfall across the Florida peninsula and continued into the Atlantic Ocean. In the Atlantic, Gordon rapidly strengthened to a Category 1 hurricane.

Hurricane Cristobal originated from a westward-tracking tropical wave which emerged from the western coast of Africa on August 14, accompanied for several days by an expanse of clouds. Some cyclonic turning was evident as the disturbance approached the Leeward Islands by August 21, but a Hurricane Hunters flight tasked with investigating the system did not reveal a strong circulation at the surface. The system failed to consolidate as it traversed Puerto Rico and Hispaniola, but on August 23, further reconnaissance data confirmed the formation of a tropical depression just south of the Caicos Islands. The nascent cyclone slowly moved north-northwestward toward a weakness in the subtropical ridge.

Three hours later the India Meteorological Department reported that the depression had intensified into a Deep Depression whilst remaining stationary. Later that day the JTWC upgraded the Deep Depression to Tropical Cyclone 06B and reported that the depression had wind speeds equivalent to a tropical storm, on the Saffir–Simpson hurricane scale. Early on November 26, the India Meteorological Department upgraded the deep depression to a Cyclonic Storm and named it Nisha. Later that day as Nisha moved northwest towards India, both the JTWC and the IMD reported that Nisha had reached its peak wind speeds of 55 kts (63 mph 102 km/h ) 45 knots (52 mph 83 km/h ).

2015 list of storm names from UK Met Office and Met Éireann The UK Met Office and Ireland's Met Éireann held discussions about developing a common naming system for Atlantic storms. In 2015 a pilot project by the two forecasters was launched as "Name our storms" which sought public participation in naming large-scale cyclonic windstorms affecting the UK and/or Ireland over the winter of 2015/16. The UK/Ireland storm naming system began its first operational season in 2015/2016, with Storm Abigail.Storm Abigail An independent forecaster, the European Windstorm Centre, also has its own naming list, although this is not an official list.

Tourists on the island of Bora Bora were evacuated to a local church, after Wasa–Arthur had swept high seas into tourist bungalows. Overall the system caused an estimated US$60 million in damage within French Polynesia, with the majority of the damage done between December 9 – 12. The system destroyed or damaged several homes, a variety of crops and damaged several public buildings, hotels, roads and power installations, with the worst affected islands being Bora Bora and Tubuai. On Rurutu island, Moerai harbour was destroyed by a cyclonic swell generated by the system, while the local school and police station were destroyed by high waves.

On 1 January, the Australian Bureau of Meteorology (BoM) started to monitor a tropical low, that had developed within the monsoon trough about to the east- northeast of Cairns in Queensland, Australia. During that day the system moved south-eastwards, before it entered an area of weak steering flow, which made the system perform a small cyclonic loop over the next two days. Early on 3 January the United States Joint Typhoon Warning Center initiated advisories on the system and designated it as Tropical Cyclone 12P. This was after the system had rapidly intensified and a wind report of had been received from Lihou Reef.

On May 24, the NHC first discussed the possibility of tropical cyclogenesis due to a broad area of low pressure that was forecast to form off the coast of El Salvador and its associated tropical wave. The tropical wave tracked generally westward across the Caribbean Sea for several days: crossing over Panama and entering the Eastern Pacific basin on May 26. At this point, the NHC considered the disturbance to have a high chance of formation over the next 5 days. Low pressure developed within the disturbance a day later, in association with a broad cyclonic circulation that was enhanced by a Central American gyre on May 27.

North- easterly winds flow down Southeast Asia, are turned north-westerly/westerly by Borneo topography towards Australia. This forms a cyclonic circulation vortex over Borneo, which together with descending cold surges of winter air from higher latitudes, cause significant weather phenomena in the region. Examples are the formation of a rare low-latitude tropical storm in 2001, Tropical Storm Vamei, and the devastating flood of Jakarta in 2007. The onset of the monsoon over the Maritime Continent tends to follow the heating maxima down Vietnam and the Malay Peninsula (September), to Sumatra, Borneo and the Philippines (October), to Java, Sulawesi (November), Irian Jaya and Northern Australia (December, January).