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The first BBC weather forecast was a shipping forecast, broadcast on the radio on behalf of the Met Office on 14 November 1922, and the first daily weather forecast was broadcast on 26 March 1923. In 1936, the BBC experimented with the world's first televised weather maps, brought into practice in 1949 after World War II. The map filled the ...
In the United States, the first public radio forecasts were made in 1925 by Edward B. "E.B." Rideout, on WEEI, the Edison Electric Illuminating station in Boston. [30] Rideout came from the U.S. Weather Bureau, as did WBZ weather forecaster G. Harold Noyes in 1931. BBC television weather chart for November 13, 1936
The high pressure reduces cloud cover through the process of subsidence. In spring and summer, the sea is cool compared to the air temperature, causing less convective cloud cover. The convective cloud forms more frequently inland, especially on higher ground such as Dartmoor, Exmoor and Bodmin Moor, thus reducing the amount of sunshine.
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The basic climate of the UK annually is wet and cool in winter, spring, and autumn with frequent cloudy skies, and drier and cool to mild in summer. The climate in the United Kingdom is defined as a humid temperate oceanic climate , or Cfb on the Köppen climate classification system, a classification it shares with most of north-west Europe. [ 1 ]
The symbols for cloud cover on these maps, like the modern symbols, were drawn inside the circle marking the position of the weather station making the measurements. Unlike the modern symbols, these ones consisted of straight lines only rather than filled in blocks which would have been less practical on a hand drawing.
Cloud cover values only vary by 3% from year-to-year averages, whereas the local, day-to-day variability in cloud amounts typically rises to 30% over the globe. Land is generally covered by 10-15% less cloud than the oceans, because the seas are covered with water, allowing for more evaporation .
The stations are listed in the order they are read in the forecast, the numbers in brackets refer to the map on the right. Weather reports included in the forecasts are issued at 2300 local time for the late broadcast and 0400 for the early one, although reports issued at other times may be included if for some reason, the most recent weather ...