Severe Thunderstorm and Flash Flood Warning Issued for Somerset and Surrounding Regions

The Met Office has issued a thunderstorm warning for the South West of England, highlighting risks of flash flooding, lightning strikes, and power outages. After a spell of warm and sunny weather, a significant change is expected on Monday, May 12.

Thunderstorms and heavy rain are forecast across northern Cornwall, Devon, Somerset, Bristol, Gloucestershire, most of Wales, and the West Midlands. Notably, South Cornwall and South Devon are excluded from this warning.

The alert is active from noon until 10 pm on Monday, during which up to 30mm of rain could fall within an hour. Such intense rainfall may lead to localized flooding and hazardous driving conditions.

Dan Harris, Deputy Chief Meteorologist at the Met Office, explains: “From Saturday night into Sunday morning, rain showers and isolated thunderstorms will move northwards across the Southwest. This weather will expand into other western parts of Great Britain and Northern Ireland through Sunday and Monday.

“On Monday, vigorous thunderstorms are particularly likely in Wales and parts of southern England. While some areas will remain dry and warm, the risk of 25-35mm of rain within an hour could cause local surface water flooding. Additionally, hail, lightning, and strong wind gusts are possible.

“Predicting exact storm locations at this lead time is challenging, so we advise staying updated with the latest forecasts and severe weather warnings over the weekend.”

The Met Office further warns: “Scattered showers and thunderstorms will develop Monday afternoon. Though fast-moving, rainfall may reach 20-30 mm in less than an hour, with isolated spots experiencing 40-50 mm over one to two hours where storms intensify. Lightning, hail, and gusty winds will pose additional hazards. Showers and thunderstorms are expected to subside by evening.”

Residents in the affected areas should prepare for potential disruptions and monitor weather updates closely.