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Dennis, as actuals and % of 1981-2010 February long-term average. Storm Dennis brought 50 to 100mm or more of rain across the high ground of Dartmoor, parts of Wales, the Lake District and Highlands. 100 to 150mm of rain fell across parts of the Brecon Beacons and south Wales valleys. More than

. At 800m: Between minus 3 and minus 5 Celsius. Freezing level: 100m, but frozen down to valley level at times. Check our weather forecast every day to get the most accurate and up to date information https://www.metoffice.gov.uk/weather/specialist-forecasts/mountain © Crown Copyright 2026. All Rights Reserved.

and visibility: Some very isolated cloud around 1000m but otherwise all cloud staying above summits. Good visibility. Temperature: Glens: Minus 3 Celsius rising to plus 2 Celsius. At 800m: Between minus 5 and minus 8 Celsius. Freezing level: 100m, frozen down to valley level. Check our weather forecast

. Freezing level: 100m, but frozen down to valley level at times. Check our weather forecast every day to get the most accurate and up to date information https://www.metoffice.gov.uk/weather/specialist-forecasts/mountain © Crown Copyright 2026. All Rights Reserved.

) 1958 Bracknell (Berkshire) 177.8 170.9 (1987) 1962 Valley (Anglesey, North Wales) 209.2 192.5 (1987) 1941 Herstmonceux (East Sussex) 291.0 224.0 (1987) 1976 The 30 October storm This brought heavy rainfall and strong winds to many areas of southern Britain. Rainfall over southern England

, work out who is going to be affected and where we need to be.  It's harder when it's unpredictable. Storm Arwen was a case in point, because that red weather warning was over Northumberland, but we ended up being really badly hit in Cumbria. There was an unusual funnelling effect down the valleys

and shelter. Jo and two other MapAction volunteers went in to support a United Nations Disaster Assessment and Coordination (UNDAC) deployment. Their first task was to help determine the scope of the emergency. This included pulling together information from satellite images of the valley hit

mechanism has been developed to ensure that the availability and quality of the disseminated information reaching the community is assessed and that the recorded feedback is shared with TMA in Dar es Salaam, and KMD in Nairobi. “Students informed their parents especially those who live at the valley used

due to the poor weather. Rain on the 8th gave poor road conditions in Wales, with flooding affecting the M4 and the A55, as well as the Conwy Valley railway line. On the 10th/11th thundery showers in north-west England caused a suspected lightning fatality in Blackpool and flooding on the M60 between

. In contrast, the Thames Valley, London and the north Kent coast normally receive less than 650 mm of rain per year, and less than 550mm around the Thames Estuary. These values can be compared with annual totals around 500 mm in the driest parts of eastern England and over 4000 mm in the western