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2024 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 sea level pressure for December 2024 for the UK and north

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 sea level pressure for October 2025 for the UK and north Atlantic, based on the ERA5 reanalysis (Hersbach et al, 2019), both as actual values

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 sea level pressure for July 2025 for the UK and north Atlantic, based on the ERA5 reanalysis (Hersbach et al, 2019), both as actual values

: Signs of high pressure returning Beyond the immediate 10-day window, the Met Office’s pressure trend analysis reveals a mixed picture. A blend of blue (low pressure) and red (high pressure) shades on the forecast charts suggests a changeable pattern. While low-pressure systems will continue to bring

2024 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 sea level pressure for December 2024 for the UK and north

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

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

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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