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Tuesday will bring a continuation of changeable conditions across western parts of the UK, with cloud and outbreaks of rain or drizzle moving eastwards through the morning. The heaviest rainfall is expected over west-facing high ground, particularly across Wales, northern England, and southwest

not routinely measured but important for model process understanding. Areas of key interest Measure updrafts, turbulence and dynamical structures in convective clouds on fine scales. Understand effect of pre-convective environment on subsequent storm development. Interaction between boundary layer structures

, it will be a largely dry day with variable cloud and sunny intervals. The best of the sunshine will be across southern, central and eastern England, where it will feel very warm, with temperatures reaching 27–28°C in places. It will be warm across much of the country, away from the northwest

fraction 12. surface (skin) temperature Un-split File 2 [yyyymmddhhmm_u1096_ng_umqv_Wholesale2.grib] Full domain, all available time steps and the following surface level parameters: 1. low cloud amount 2. medium cloud amount 3. high cloud amount 4. convective cloud base height 5. convective cloud top

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, particularly between day and night. The boundary layer depth is simply the current thickness of this layer. Fraction of horizontal grid square occupied by cloud below 1000 feet above sea level. Time steps J kg-1 0.1 [None] Hourly (1h-126h) J kg-1 0.1 [None] Hourly (1h-126h) J kg-1 0.1 [None] Hourly (1h

: Early rain will clear to leave the overnight period dry with clear spells. After a dry start cloud will increase and thicken through the morning with rain spreading northeast through the afternoon. Storm force summit winds will gradually decrease through the day. Chance of cloud-free hill tops above

will clear to leave the overnight period dry with clear spells. After a dry start cloud will increase and thicken through the morning with rain soon spreading northeast. The northeast will stay mostly dry. Storm force summit winds will gradually decrease through the day. Chance of cloud-free hill tops

% Forecast for Thursday 11 Dec 2025 2025-12-11 Weather: Early rain will clear to leave the overnight period dry with clear spells. After a dry start cloud will increase and thicken through the morning with rain spreading northeast through the afternoon. Severe gale summit winds will gradually decrease

2025 2025-12-11 Weather: Early rain will clear to leave the overnight period dry with clear spells. After a dry start cloud will increase and thicken through the morning with rain soon spreading northeast. Storm force summit winds will gradually decrease from the afternoon. Chance of cloud-free