An explosive winter storm roared across Britain on Sunday, packing high winds and heavy rain that prompted a record number of flood warnings in England.
The Met Office, Britain's meteorological service, said Storm Dennis was expected to dump 5 1/2 inches of rain in south Wales before gradually easing.
The National Weather Service Ocean Prediction Center said Storm Dennis deepened by 40 millibars in 24 hours, becoming one of the five strongest non-tropical cyclones on record in the North Atlantic.
Major incidents were declared by emergency services in south Wales and parts of England as police and firefighters worked to rescue people trapped after rivers burst their banks, Reuters reported.
“Whilst the heaviest rain has cleared from Northern Ireland and Scotland, England and Wales will continue to see heavy rain on Sunday, with a risk of severe flooding in places,'' said Andy Page, the Met Office's chief meteorologist.