A "PERFECT storm" of heavy rain, strong winds and melting snow could leave hundreds of homes across the UK flooded this weekend.
Storm Dennis is forecast to batter the country with 70mph gales and up to six inches of rain in some areas, the Met Office warned.
The Environment Agency (EA) said the latest storm is set to be worse than Ciara – dubbed storm of the century – due to rain falling on already saturated ground.
Ciara left a devastating trail of destruction after a month's worth of rain was dumped in just 24 hours last weekend.
The storm cut off villages, left over 13,000 homes in the Midlands, the south west and Wales without power and sparked travel chaos on air, land and sea.
The Met Office has issued severe weather warnings covering most of the UK this weekend.
These include amber warnings stating that flooding could cause a danger to life, power cuts are expected and travel chaos.
Paul Davies, principal meteorologist at the Met Office, said the worst affected areas will be the north and south-west England and Wales, with the South East set to suffer the most on Sunday.
John Curtin, the agency's executive director of flood and coastal risk management, said Cumbria, Lancashire and Yorkshire were the areas he was most "concerned" about.
Mr Curtin said: "This (storm) could be a step up from what we have seen before."
"We had a big storm last weekend, (we now have) saturated catchments, snow melt and rainfall, so it is a perfect storm."
As of 6pm on Friday, there were 14 flood warnings – meaning flooding is "expected" – and 135 flood alerts – meaning flooding is possible – in place across the country.
Flood defences will be in operation, and additional temporary flood barriers were installed in Shropshire and Lancashire on Friday ahead of the anticipated deluge.
Barriers to be deployed on Saturday include at Ilkley in Yorkshire and Leatherhead in Surrey.
More than 500 staff are on active incident duty and 30 mobile pumps have been deployed, the Environment Agency said.
Over this winter period, the agency has issued more than 1,400 flood warnings, while flood defences have protected around 64,000 properties.
Newly appointed Environment Secretary George Eustice said he had spoken to local flood response groups across the country on Friday.
Highlighting the Environment Agency's preparations, he added: "We are fully focused on ensuring that communities are protected and have access to the support and advice they need to stay safe this weekend."
Network Rail advised passengers to expect disruption on many routes due to flooding and to allow more time for their journeys.
Tracks could be flooded as the ground near parts of the railway is already saturated, particularly in the North West.
Cross-border journeys between England and Scotland were severely restricted last weekend.
Network Rail's network services director Nick King said: "As we saw last week, stormy weather brings high winds that can lead to trees and other debris falling on to the railway, and floods that prevent us from running trains on parts of the network.
"That is why we are again asking passengers to check their journeys before they travel this weekend, either with their train operator directly or through National Rail Enquiries."
"Our teams of engineers will again be out working at all hours and in all weathers to remove fallen trees and debris from the railway, repair damaged infrastructure and work to reopen lines affected by flooding."
Households living near rail lines are being urged to secure any loose items in their gardens, after several trampolines were blown on to tracks and overhead electric wires last weekend, blocking lines.
The storm is also likely to cause treacherous driving conditions.
RAC patrol of the year Ben Aldous said: "After so much wind and rain last weekend, drivers will again have to contend with some pretty dreadful conditions on the road with the arrival of Storm Dennis."
"With transport disruption likely, drivers should expect their journeys to take longer than usual and should stay up to date with the latest traffic and travel information, as the conditions could change quickly."
"It's essential motorists never attempt to drive through deep floodwater. Those that do are not just risking damage to their vehicles but risking their lives and those of their passengers."
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