Large parts of Britain remain at risk of flooding as the country continues to be battered by strong winds and powerful waves.
The South West of England and south Wales have taken the brunt of the latest stormy weather, which has affected many areas of the UK since Christmas.
The weather has left thousands of homes without power, transport networks in chaos and has forced people to leave their homes - with wind speeds reaching more than 90mph.
The Environment Agency (EA) has nine severe flood warnings in place - meaning a danger to life - covering much of the south coast of England from Cornwall to Dorset, and the Somerset Levels.
The EA was warning there was a "high risk" of coastal flooding in Dorset, Devon and of further river flooding on the Somerset Levels and Moors.
The South West, southern and central England were at risk of flooding for the remainder of the week and into the weekend as widespread bands of rain are forecast.
On the Somerset Levels, which has been badly affected by flooding since Christmas, police were using a helicopter to advise the occupants of more than 150 properties at Fordgate and Northmoor to leave their homes because of flooding.
In response to the crisis, Prime Minister David Cameron was this afternoon chairing a meeting of Cobra.
In the House of Commons, he announced an extra £100 million would be spent over the next year tackling the aftermath of the floods.
"Whatever is required, whether it is dredging work on the rivers Tone and Parrett, whether it is support for our emergency services, whether it is fresh money for flood defences, whether it is action across the board, this Government will help those families and get this issue sorted," Mr Cameron told MPs,
Labour leader Ed Miliband said: "Many of those affected feel the Government's response has been slow and that more could have been done sooner."
Western Power Distribution said about 44,000 customers in the South West had been affected by power cuts since yesterday and nearly 10,000 homes remained without electricity.
The Met Office said yellow warnings of rain were in place for parts of Scotland, the East of England, London and the South East, the South West, Wales and the West Midlands.
In Dawlish, between Exeter and Cornwall, a section of seawall under the coastal railway line had collapsed and two people had to be rescued from a car.
Mr Cameron promised "urgent action" to deal with the situation in Dawlish as he came under sustained pressure from West Country MPs in the House of Commons.
First Great Western said all lines between Exeter St Davids and Penzance had been closed and was unable to offer alternative bus services because of the disruption to the roads from the storms.
Residents were evacuated from 30 flooded houses in Kingsand, Cornwall, and up to 35 homes affected in Looe with residents advised to stay away from the seafront amid fears of huge waves.
Devon and Cornwall Police warned residents to stay away from coastal areas as it dealt with a large number of calls relating to road debris, damage to property and flooding.
Cornwall Council said fire crews were dealing with flood reports and problems in Polkerris, Fowey and Looe.
The A390 at Lostwithiel was closed, with fire crews also dealing with fallen trees at Poughill, near Bude, Seaton, and the road between Constantine and Penryn.
The pier at St Mawes has also been closed and several schools were shut across Cornwall as a result of power problems.
Devon County Council staff were working flat out to deal with the aftermath of the storms, having received more than 300 calls overnight.
Exmouth, Sidmouth and Seaton seafronts were closed, and the high tides flooded properties in Exmouth, Lympstone, Starcross and Topsham, the authority said.
On the seafront at Torcross homes were evacuated after the high tide smashed the fronts of four properties, forcing nine people to leave their homes.
One unfortunate resident had a front bay window completely destroyed by the weather.
South Hams District Council has provided 12 tonnes of sandbags and 15 sheets of plywood to board up those homes damaged by the waves.
And shingle thrown on to the nearby Slapton Line beach by the storms had forced the closure of the road to vehicles.
The Hoe in Plymouth had also experienced large waves and damage to some properties.
There were also warnings of potential problems on minor roads and the possibility of landslips in coastal areas.
Stuart Hughes, Devon County Council's cabinet member for highway management and flood prevention, said: "These are some of the most horrendous conditions I can remember, and the combination of heavy rain and strong winds is causing disruption across the county."
The EA said that since Friday around 328 homes have been flooded while over 122,600 have been protected, the EA said.
Since early December flood schemes have defended more than 1.2 million homes and businesses, and protected nearly 2,500 square kilometres of farmland across England.
The pumping operation on the Somerset Levels continues around the clock, with up to 2.9 million tonnes of water being pumped off the Levels every day - the equivalent of three Wembley Stadiums.
John Curtin, head of incident management, said: "We're preparing for successive bands of heavy rain forecast into the weekend, groundwater and river levels are already high following the wettest January on record for England.
"With further river and coastal flooding expected this week we continue to have teams working around the clock to protect homes and communities and we are mobilising staff from across the Environment Agency to provide support in affected areas."
Met Office forecasters were warning of further disruption as the heavy rain and gale force winds continue into the weekend.
Strong winds and big waves will continue to bring risks along southern and southwestern coasts today before the winds ease.
But another band of heavy rain is due to sweep across southern Britain tomorrow into Friday.
A separate area of low pressure is then expected to bring more rain and very strong winds on Saturday.
Andy Page, Met Office chief meteorologist, said: "The unsettled weather will continue over the coming days with heavy rain across the southern half of Britain on Thursday evening into Friday, and that will be quickly followed by another storm moving in early on Saturday.
"This will bring the risk of flooding and damaging winds bringing down trees to cause disruption to travel and power networks."
The stormy conditions will also continue to bring the additional risk of large and potentially hazardous waves in coastal areas.
Will Stephens, RNLI coastal safety staff officer, said: "With more stormy weather forecast, we're asking people to take extra care if they're going down to the coast.
"Rough seas and extreme weather might look exciting, but getting too close can be risky.
"So respect the water and, in particular, avoid exposed places where big waves could sweep you off your feet."