STORM Christoph is set to dump up to 8 inches of rain on Britain over the next 48 hours.
Its arrival means that dozens of flood alerts are in place this morning.
⚠️ Read our UK weather live blog for the very latest news and forecasts.
The Met Office issued amber danger to life warnings for swathes of the country — beginning today.
Some areas could see more than twice their average rainfall for January by midday on Thursday.
Melting snow from last week’s flurries is expected to increase the risk of flooding.
There are fears some communities ravaged by previous downpours face disaster.
Some rivers, including the Ouse, have already burst their banks and towns and villages could be cut off.
WRATH OF CHRISTOPH
Power cuts and transport disruption are also expected.
Greater Manchester, Lancs, Yorks, the East Midlands, Lincs and Cambs are likely to be worst hit.
Chief meteorologist Dan Suri said: “Some locations could see over 4in rain falling through the course of a couple of days with up to 8in possible over higher ground.”
Christoph will also bring 60mph winds before petering out by Thursday morning.
Elsewhere, wacky weather around the world has seen heavy snowfall halt traffic in Turkey and an icy blast send temperatures in the Sahara in North Africa down to -2C.
A major incident has been declared in South Yorkshire in preparation for potential flooding this week.
The Mayor of Doncaster, Ros Jones, tweeted: "Key risk areas have been inspected over the past 36 hours, sand-bags have been handed out in flood-risk areas & will continue over the next 24 hours."
An Amber alert is also set to come into place in early hours of Tuesday morning from 6:00am until 12:00pm on Thursday in Leeds, Manchester, Sheffield and Wakefield.
This comes after much of the historic city of York was left submerged following the Great Ouse flooding the city centre.
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There was also severe flooding in Holywell, Cambridgeshire after the river burst its banks.
Met Office meteorologist Tom Morgan said: “It's going to feel quite different to last week, with temperatures in double figures.
"Our main concern is heavy and persistent rainfall falling over the Peak District and parts of the Pennines which could combine with melting snow to cause flooding."