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30°C. This is well above the threshold for a heatwave, which is 28°C in London and lower elsewhere. Several station records in Scotland and Northern Ireland were broken, with some dating back more than 50 years. The highest temperature recorded during the heatwave was 35.8°C in Faversham on 1 July
drawing a hot Tropical Continental Airmass; this type of pressure pattern being typical of heatwave conditions across the UK. Temperatures on the 9th reached 31 to 32°C fairly widely across south-east England, and 33°C in London. As often happens in the UK, the heat and humidity lead to some intense
PWSCG (34) Meeting 10:30 – 16:00 Wednesday 15 th July 2015 Conference Centre, BIS, 1 Victoria Street, London In Attendence: Wyn Williams (WW) Denise Harker (DH) Mike Gray (MG) Paul Riches (PR) Katrina Lidbetter (KL) Alessia Morris (AM) Colin Hord (CH) Martin Jones (MJ) George Tabeart (GT) Liz
GRIB2 CB/Icing/Turbulence Objective: Ensuring flight planning systems have timely and reliable forecasts of ’blended * ’ en-route aviation hazard data. ( * combined WAFC London & Washington hazard data ) The table below shows the percentage of complete datasets available on SADIS by 05:00 over the last
2025 April 2025 May 2025 late GRIB2 100% 97.6% 100% 98.4% GRIB2 CB/Icing/Turbulence Objective: Ensuring flight planning systems have timely and reliable forecasts of ’blended * ’ en-route aviation hazard data. ( * combined WAFC London & Washington hazard data ) The table below shows the percentage
August 2025 late GRIB2 98.4% 98.3% 99.4% 100% GRIB2 CB/Icing/Turbulence Objective: Ensuring flight planning systems have timely and reliable forecasts of ’blended * ’ en-route aviation hazard data. ( * combined WAFC London & Washington hazard data ) The table below shows the percentage of complete
late GRIB2 97.6% 100% 98.4% 98.3% GRIB2 CB/Icing/Turbulence Objective: Ensuring flight planning systems have timely and reliable forecasts of ’blended * ’ en-route aviation hazard data. ( * combined WAFC London & Washington hazard data ) The table below shows the percentage of complete datasets
if we inadvertently find ourselves in cloud? When did we last practise with London Centre / D&D on VHF 121.5MHz? • Ensure careful monitoring of fuel, distance, speed and elapsed time when dealing with delays from encountered weather. • During take-off for this flight, be ready to deal with gusts
in the 1961-1990 averaging period only London and Hampshire recorded six or more days over 28°C, by the latest decade (2014-2023) this has spread across much of England and Wales, with frequencies in the south east increasing to over 12 days each year in many counties. The expansion of the area
GRIB2 100% 98.4% 98.3% 99.4% GRIB2 CB/Icing/Turbulence Objective: Ensuring flight planning systems have timely and reliable forecasts of ’blended * ’ en-route aviation hazard data. ( * combined WAFC London & Washington hazard data ) The table below shows the percentage of complete datasets available
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