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for the seasonal mean temperature • Medians increases with rarity, because 1-in-100 year events are by construction higher than 1-in-20 or 1-in-50 year events • Uncertainty ranges in return level also increase slightly with return period Figure 1 A comparison of summer daily maximum temperature for a London

to aviation, with the potential to damage aircraft engines and systems. As the London Volcanic Ash Advisory Centres (VAACs), we are responsible for monitoring and forecasting ash dispersion from volcanic eruptions originating in Iceland and the north-eastern corner of the North Atlantic. Specialist

in heatwave territory. For a heatwave to be officially recognised, temperatures must exceed specific thresholds for three consecutive days. These thresholds vary by region: 28°C in London and the southeast, 27°C in parts of the Midlands, and 25°C across much of Wales, northern England, Scotland, and Northern

on radar came not from the skies, but from the ground, or rather, just above it. Back in July, swarms of flying ants were picked up on radar, appearing as strange, flashing echoes to the northwest of London. These were initially mistaken for showers, but closer inspection revealed their true identity

temperature recorded on this day in the UK was 16.3°C at St James Park, London in 2022. Scotland’s warmest New Year’s Day reached 15.9°C at Achnagart (Ross & Cromarty) in 2022, while Wales saw 16.2°C at Arthog Fergla Fach Farm (Gwynedd) in 2022. Northern Ireland’s warmest was 15.1°C at Murlough (Down

December. However, there are no signs of a prolonged mild spell, as colder air remains close to the north of the UK. The temperature pattern will be up and down, with London seeing a sharp rise followed by a gradual drop, and Edinburgh experiencing less dramatic changes but still some fluctuations

the next 48 hours across UK Domestic Airspace, to support situational awareness and planning (including staffing). A tactical (0-3 hour) trajectory-style forecast, and supplementary Meteorologist-written commentary issued ahead of and during convective weather activity within the London Terminal

between Reading and London, with a peak near Guildford. A corridor from Bristol through Birmingham to Manchester. Parts of Essex and Suffolk. These hotspots are partly due to population density, more people means more chances for tornadoes to be observed and reported, but they also reflect genuine

as WAFC London and NOAA as WAFC Washington. In the 1990’s the WAFCs and their WAFS were mature enough that the regional area forecast centres were closed. Evolving technology Over the years, our services have continuously evolved to meet the changing needs of the aviation industry: 1990s: We developed

London. Coastal areas exposed to the north and west may see showers, but these are less likely to affect Stamford Bridge. Breezy conditions will persist, and it will feel cold, so layering up is advisable. Newcastle United v Fulham (15:00, St. James' Park) Cloudy with outbreaks of rain at times