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These charts show the monthly mean sea level pressure for August 2025 for the UK and north Atlantic, based on the ERA5 reanalysis (Hersbach et al, 2019), both as actual values and as an anomaly relative to the August long term average. These charts provide an indication of the weather characteristics

view These maps show daily rainfall for each day of January 2025 as daily totals. The daily rainfall is the total from 0900UTC on the day in question to 0900UTC the following day. Mon Tue Wed Thu Fri Sat Sun Monthly atmospheric circulation Mean sea level pressure These charts show the monthly mean

Mean sea level pressure These charts show the monthly mean sea level pressure for January 2026 for the UK and north Atlantic, based on the ERA5 reanalysis (Hersbach et al, 2019), both as actual values and as an anomaly relative to the January long term average. These charts provide an indication

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of area forecasts for the UK, including SIGMETs, AIRMETs, Volcanic Ash Advisories, Regional Pressure Settings and London CTA helicopter forecasts. Each of these products are described in section 3 of this guide. • Briefing Charts This section allows pilots to access a range of UK and international weather

As low pressure parks up in the southwest for the next week, more unsettled weather is expected for many. However, mild southerly air means there will still be some warm sunshine on offer.

This weekend  Over the weekend, rain and showers are most likely across western parts of the UK and it will be windy at times too. A yellow warning for rain has been issued for much of Northern Ireland and western Scotland.   In the latest weekend weather forecast Alex Deakin said: “Low pressure

This week sees an improving picture, with high pressure becoming increasingly dominant over the weekend and bringing dry, more settled conditions for many. The change does happen slowly though. Wednesday sees a chilly start, with a warm front bringing showers to northeastern and eastern areas

to the north-west due to an upper-level inversion. A further feature of this event was the sustained nature of the strong winds, with the fronts stalled across Scotland due to the blocking area of high pressure across Scandinavia. The chart below shows hourly maximum gust speeds at Leuchars (Fife

Tropical cyclone forecast error charts - southern hemisphere

Tropical cyclone forecast error charts - northern hemisphere