Storm Chandra will bring heavy snow, rain and strong winds to Britain, the Met Office has warned.
The forecaster said there could be up to 8in of snow across northern England and Scotland on Tuesday.
A yellow warning for wind covers Cornwall, south-western Wales and parts of northern Devon, while yellow warnings for snow have been issued for Scotland and northern England, where 2-5cm could fall and as much as 10-20cm could accumulate at higher elevations.
The Scottish Lowlands and parts of north-west and north-east England are likely to be affected.
Flooding, power cuts and travel chaos are also likely in Cornwall, Devon, Dorset and Somerset over the next 48 hours.
An amber warning for rain is in place for south Devon, much of Dorset, southern Somerset and south-east Cornwall, where 30-50mm of rain could fall, with up to 60-80mm over higher ground of south Dartmoor.
Meanwhile, the Met Office said gusts of 60-70mph will affect eastern Northern Ireland, with possible 75mph gusts in coastal locations, adding that “easterly winds of this strength are unusual, and are likely to be impactful”.
An update from the Environment Agency showed 21 flood warnings and 124 flood alerts in place across England, mostly across the South West, as of 1pm on Monday.
Paul Gundersen, the Met Office chief forecaster, said: “Initially, strong winds will impact the Isles of Scilly, western Cornwall and south-west Wales, which are still vulnerable after Storm Goretti. Gusts of 70 to 80mph are possible here.
“Heavy rain is an additional hazard as it falls on saturated ground in Dorset and southern parts of Devon, Somerset and Cornwall.
“As Chandra interacts with colder air further north, snow becomes a hazard, with 10-20cm of snow possibly accumulating over higher ground in the Pennines, southern Scotland and the Highlands. With a complex spell of weather, its important people stay up to date with the forecast and any warnings in your area.”
Snow covering rooftops and roads in Peterborough during the cold snap earlier this month – Paul Marriott
Nick Mullender, a mobile servicing and repairs team leader at the RAC, said: “Flooding is highly likely, making many roads dangerous. Our message to drivers is simple – do not drive through standing water unless you are certain the water is shallow enough and it’s safe to do so.
“In these conditions, drivers need to slow down and stay alert. Wet roads can double stopping distances, so taking a cautious, steady approach and allowing extra time to react is essential.
“If your vehicle already has known faults, now is not the time to take risks. Avoid unnecessary journeys and get issues fixed promptly by a trusted mobile mechanic or local garage.”
Storm Ingrid whips up the sea at Lyme Regis, Dorset, over the weekend. The Met Office said rural communities in the region could be cut off as a result of flooded roads – Graham Hunt/Alamy Live News
Storm Chandra is the next storm to be named by the western Europe storm naming group list shared between the UK, Ireland and Netherlands.
The UK Health Security Agency has issued cold weather alerts for northern areas of England, covering Monday to Friday, while the Met Office said rural communities could be cut off as a result of flooded roads after Storm Ingrid hit the South West.
Devon and Cornwall Police are searching for a missing kayaker in his 40s after he got into difficulty on the River Exe in Tiverton on Saturday afternoon.
Meanwhile, a sea wall protecting the railway line at nearby Dawlish partially collapsed and train services were suspended between Exeter St Davids and Plymouth on Saturday. Part of Teignmouth Grand Pier was washed away in the storm.