Britain is bracing for Storm Claudia today, with up to six inches of rain expected in just 12 hours.
Amber alerts, flood warnings and travel advice have all been issued as the bad weather comes in.
Two "danger to life" amber rain warnings were issued by the Met Office yesterday for parts of England and South Wales on Friday, lasting from midday to midnight.
An extended yellow rain warning has been decreed across much of southern England and the Midlands, in effect from 6am tomorrow until 6am Saturday.
The northwest of both England and Wales have been handed two yellow wind warnings, in force tomorrow from midday to midnight.
Britain is set to be battered by Storm Claudia with up to six inches of rain expected in just 12 hours
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MAPPED: Where are the flood warnings, and where are the Met Office alerts?
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South Wales is expected to be the rainiest part of Britain on Friday, with three inches of rain expected across the region and between four to six inches in some upland areas.
Heavy downpours in central England are expected to bring 1.6 to 2.4 inches of rain, with certain areas in western England and the East Midlands bracing for 3.1 inches.
Britons have been warned to expect strong winds coming from the east, with gusts of 50 to 60mph anticipated to batter the country in the afternoon and evening.
Some coastal areas and exposed higher ground areas could see gales of up to 70mph.
Some coastal areas could be hit by gales of up to 70mph
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Three red flood warnings have been issued for Keswick Campsite in the Lake District, the River Eden at Carlisle, Rickerby Park, Swifts and Stoneyholme Golf Courses and the River Eden at Warwick Holmes.
Orange flood alerts have been issued to 96 different areas across Britain.
The amber warning issued to central England says that "fast flowing or deep floodwater is likely, causing danger to life" as "homes and businesses are likely to be flooded, causing damage to some buildings".
It also warns of travel disruption in the region "as spray and flooding leading to difficult driving conditions and some road closures" is to be expected.
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Met Office chief meteorologist Matthew Lehnert said some areas could see a month's worth of rain in just a day
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Public transport in central England is expected to see "delays and some cancellations to train and bus services".
The amber warning announced in Wales warns residents that "loss of power and other essential services, such as gas, water or mobile phone services, is possible".
Matthew Lehnert, the Met Office's chief meteorologist, said: "Storm Claudia will bring very heavy rainfall to a large swathe of central and southern England and Wales on Friday into Saturday.
"This rain will become slow-moving, and some areas could see up to a month's worth of rain in 24 hours.
"Much of this will fall on saturated ground, increasing the chances of flooding and contributing to the amber warnings we have issued."
The Royal Society for the Prevention of Accidents has warned Britons to take extra steps during the storm to ensure they remain safe.
Policy director Steve Cole said: "Storm Claudia isn't just a risk outdoors - homes may be vulnerable too.
"Secure garden furniture, bins, and anything that could blow away or cause damage. Indoors, make sure windows and doors are firmly shut and keep an emergency kit ready."
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