Pan Regional Forecast also air. News presenter Bob Warman and weather presenter Des Coleman were announced as self-isolating.ITV News Central and Coronavirus: What we're doing differently Liz Hannam, itv.com, 1 April 2020.
|
|
The agency issues forecasts out to five days in the future, hydrological bulletins including recent rainfall, agricultural bulletins, and run their own regional forecast model based upon the MM5. They also issue warnings for intense storms, strong northerlies in the Gulf of Mexico, snowfall, and excessive rainfall.Servicio Meteorologia Nacional. Avisos y Alertas.
|
|
ITV Weather is the national and regional forecast shown on UK terrestrial network ITV, and is provided by the Met Office (except the Channel Islands forecast, which is provided by the Jersey Meteorological Department). Bulletins are usually broadcast after every ITV News and ITV regional bulletin. Jon Mitchell is the longest serving forecaster after 31 years with ITV Weather.
|
|
The ITV National Weather forecast was first broadcast in 1989, using data supplied by the Met Office, and was presented by a number of weather forecasters. The forecasts are sponsored in which the sponsors message, would appear prior to and following the forecast. The forecasts are made immediately after the main national news bulletins. Prior to the creation of the national forecast, regional forecast provided by each regional companies were shown in each region only.
|
|
9 The advent of numerical weather prediction in the early 1960s changed the forecasting system in Canada to one of large regional forecast centres, called "Weather Centrals", with local support offices called "Weather Offices". For the Canadian prairie provinces and the arctic territories, the Prairie Weather Central was established in Winnipeg by 1967. The smaller Weather Offices in support of the Prairie Weather Central included Edmonton, Whitehorse and Regina, Saskatchewan., Thomas, M.K., 1972: M.K. Thomas, A century of Canadian meteorology, Annual Record of Operations, Environment Canada, Atmospheric Environment Service, 1971-1972, pp. 1-20.
|
|
Though first attempted in the 1920s, it was not until the advent of computer simulation in the 1950s that numerical weather predictions produced realistic results. A number of global and regional forecast models are run in different countries worldwide, using current weather observations relayed from radiosondes, weather satellites and other observing systems as inputs. Mathematical models based on the same physical principles can be used to generate either short-term weather forecasts or longer-term climate predictions; the latter are widely applied for understanding and projecting climate change. The improvements made to regional models have allowed for significant improvements in tropical cyclone track and air quality forecasts; however, atmospheric models perform poorly at handling processes that occur in a relatively constricted area, such as wildfires.
|
|
That was followed in 1969 by his classical critical review of the entire plume rise literature,Briggs, G. A., "Plume Rise", United States Army Environmental Command Critical Review Series, 1969 in which he proposed a set of plume rise equations which have become widely known as "the Briggs equations". Subsequently, Briggs modified his 1969 plume rise equations in 1971 and in 1972.Briggs, G. A., "Some recent analyses of plume rise observation", Proceedings of the Second International Clean Air Congress, Academic Press, New York, 1971Briggs, G. A., "Discussion: chimney plumes in neutral and stable surroundings", Atmospheric Environment, 6:507–510, 1972 The Urban Airshed Model, a regional forecast model for the effects of air pollution and acid rain, was developed by a private company in the US in 1970. Development of this model was taken over by the Environmental Protection Agency and improved in the mid to late 1970s using results from a regional air pollution study.
|
|
On June 25, 2001, The Weather Channel introduced completely redesigned introductions for its local forecast segments and forecast programs, as well as a new slogan ("Live By It"). The separate morning Weather Center AM and nighttime Weather Center PM programs were also discontinued, with Weather Center becoming a single general program rather than existing in the form of three separate daypart-specific editions, having been significantly pared down with the introduction of new programs such as Evening Edition (weeknights 9pm-3am (including long-form programs)) and Weekend Now (weekends 5-11am). The Weather Star XL received a graphical refresh for the first time in September 2001, which included the introduction of different colors on text boxes, a new cloud background, improved regional forecast and radar maps, and new title bars and fonts that, as with the previous version, matched the on-air graphics that were used by TWC at the time. In April 2002, the TWC-compiled local forecasts introduced the previous year on Weatherscan replaced the forecasts sourced by the National Weather Service on the WeatherStar systems.
|
|
The 15th Operational Weather Squadron was formed as part of the Chief of Staff of the United States Air Force's weather reengineering effort and commenced operations on 19 February 1999. The 125-person regional forecast center reaches full operating capability in June 2001 and provides direct meteorological support to the Tanker Airlift Control Center and total force flying missions in the northeast United States. The 15th Operational Weather Squadron was the recipient of the United States Air Force Fawbush-Miller Award recognizing the Outstanding Operational Weather Squadron performing the most outstanding weather support, operations, and training. During 2000, the squadron pioneered the use of database and web technologies to produce and disseminate over 3 million forecasts for 126 Air Force and Army active duty, guard and reserve flying units in a 22-state area of responsibility. Their total integration with mission planners re-routing weather restricted C-5 Galaxy and C-17 Globemaster III missions ensured pinpoint selection of favorable air refueling tracks and airfields resulting in cost avoidance in excess of $12M.
|
|