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

to build across the UK at the start of September. The influence of former tropical cyclone Franklin as it moved into the north Atlantic also amplified this build-up of high pressure. The analysis chart at 1200UTC 9 September 2023 shows high pressure across much of the UK with a light southerly flow

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 November 2024 for the UK and north Atlantic, based on the ERA5 reanalysis (Hersbach et al, 2019), both as actual values

of October 2023 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 October 2023 for the UK

rainfall maps - calendar view These maps show daily rainfall for each day of August 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

of England and Wales worst affected by strong winds. The lowest pressure on the 6-hourly analysis charts was 946 hPa to the west of Ireland at 00 UTC on 10 March 2008 (see chart below). There was disruption to transport and power supplies, with restrictions imposed on several major bridges, including

Wed Thu Fri Sat Sun Monthly atmospheric circulation Mean sea level pressure These charts show the monthly mean sea level pressure for September 2024 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 September

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 September 2024 for the UK and north

Wed Thu Fri Sat Sun Monthly atmospheric circulation Mean sea level pressure These charts show the monthly mean sea level pressure for September 2024 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 September

rainfall maps - calendar view These maps show daily rainfall for each day of September 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