The UK will see no let-up in the bad weather over the next few days, with possible flooding in the South West while other areas face a weekend whiteout.
The Environment Agency said heavy rain in the next two days could lead to flooding in south west England while snow further north is likely to cause significant travel disruption.
The Government agency said it was monitoring river levels and was expecting to issue flood alerts and possibly more serious flood warnings for the South West region.
Ben Johnstone, of the Environment Agency, said: "We strongly urge people to sign up to flood warnings on the Environment Agency website, keep a close eye on local weather forecasts and be prepared for possible flooding. We also ask that people stay safe and not try to wade or drive through any deep water."
A severe weather warning has been issued for rain in the region, with 40mm to 60mm (1.6-2.4 inches) set to fall over southern Devon and Cornwall in the next 24 hours, and up to 100mm (four inches) on exposed southern slopes.
While the South West is facing downpours and possible flooding, much of the rest of Britain faces a white weekend with widespread snow storms and strong winds.
The Met Office has issued a severe weather warning for snow across many parts, with predictions of 10-15cm (4-6 inches) possible in the north Midlands, north east Wales and north west England.
High areas could see 20-40cm (8-16 inches) of snow fall and strong and even gale force winds could lead to blizzard conditions, as the miserable March continues.
Heavy rain sweeping across Northern Ireland will turn increasingly to snow, with up to 30cm across the hills of Down and Antrim, while on the east coast rain and sleet could cause localised flooding.
The AA issued warnings to motorists that even short journeys could be difficult and that there could be a repeat of the scenes in southern England last week when hundreds of drivers were stranded in their cars overnight.
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