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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

of complete data. January 2025 February 2025 March 2025 April 2025 late GRIB2 100 100 97.6 100 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

chance of disruptive snow lies in Wales, the Midlands, and northern England, with accumulations of 10 to 20cm possible in the most exposed spots. Further south, rain will dominate, but as the storm moves away and northerly winds return, even the southwest could see a brief spell of snow. London

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

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

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

20th the focus shi ed to northern and western parts with Northern Ireland and the Manchester area experiencing heavy snowfalls. On Monday 21st, areas west of London were badly affected, while on Tuesday 22nd and Wednesday 23rd icy conditions caused further problems. On the 23rd, rain falling

in southern Australia.  In light of the Australian fires, in January 2020 an international group of scientists, including from University of East Anglia (UEA), Met Office Hadley Centre, University of Exeter, Imperial College London, and CSIRO Oceans and Atmosphere reviewed published scientific evidence

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

from the southwest will keep temperatures on the mild side, with little sign of any significant cold spells. Ensemble forecasts for London suggest average temperatures of 10–11°C, with only brief dips into colder territory. Even in Edinburgh, the pattern is similar, with only short-lived colder snaps