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positioned across Europe. This system detects pulses of radio waves, known as 'sferics,' emitted during lightning strikes at a very low frequency (VLF). These sferics travel great distances, reflected between the Earth's surface and the ionosphere, similar to light in a fiber optic cable. To pinpoint

and rain will begin to approach the far northwest later in the night. Further south, areas such as Wales, southwest England, and the Midlands may see light rain or drizzle under low cloud, while other regions remain dry with variable cloud cover. It will be a mild night for most. Outlook for Saturday

. “But for the vast majority, I think it will be a dry and a bright day tomorrow with some good spells of sunshine lifting the temperatures. A warmer day than today, feeling warmer because the winds will be light and with a bit of sunshine, we're likely to see those temperatures more widely over 20°C. 24, 25°C

day – and a simple traffic light system was developed to signify potential hazards. Supported by: Fund Manager: Spreading the message Developing the forecasts was one thing, but getting them out to remote communities across a vast geographical area was another. To be effective, it was crucial

15:00 18:00 21:00 Partly cloudy Partly cloudy Light snow Sunny intervals Sunny intervals Sunny intervals (night) (night) showers (night) Precipitation probability 10% 10% 10% 20% 40% 50% Forecast for Saturday 29 Nov 2025 2025-11-29 Weather: Cloudy with a few showers at first, wintry above 200-400m

a modelau cyfrifiadurol. I greu rhagolwg, mae angen i chi wybod ble mae’r lludw nawr. Gelwir hyn yn arsylwi. Gwneir arsylwadau lludw folcanig mewn nifer o wahanol ffyrdd gan gynnwys o ddata lloeren, gan radar a chan LiDAR (Light Detection and Ranging). Mae’r Swyddfa Dywydd yn defnyddio offeryn o’r enw

a modelau cyfrifiadurol. I greu rhagolwg, mae angen i chi wybod ble mae’r lludw nawr. Gelwir hyn yn arsylwadau. Gwneir arsylwadau lludw folcanig mewn nifer o wahanol ffyrdd gan gynnwys o ddata lloeren, gan radar a chan LiDAR (Light Detection and Ranging). Mae’r Swyddfa Dywydd yn defnyddio offeryn o’r enw

. It incorporates 15 simulations of the Met Office Hadley Centre model HadGEM3 (PPE-15) and 13 other climate models selected from the CMIP5 ensemble (CMIP5-13); • UKCP Regional (12km): are a set of 12 high resolution realisations at 12km covering the 21 st Century, downscaled from the PPE-15 over

such as temperature, wind speed and direction Regularly updated text forecasts for mountain weather and UK regions available in xml or JSON formats. In July 2014 marine observation data was the latest addition to the API. 2 Hadley Centre Climate Programme funded through DECC and DEFRA. 3 http

. It incorporates 15 simulations of the Met Office Hadley Centre model HadGEM3 (PPE-15) and 13 other climate models selected from the CMIP5 ensemble (CMIP5-13); • UKCP Regional (12km): are a set of 12 high resolution realisations at 12km covering the 21 st Century, downscaled from the PPE-15 over