Freezing fog, ice, sleet and snow will cause travel disruption for at least a week, with flights to the UK and Republic of Ireland affected and more severe weather conditions on the way.
Parts of Scotland, south-west England, the Midlands, north-west England and Wales were affected by snow on Saturday, causing travel disruptions.
Dozens of flights were canceled at Dublin Airport and Manchester Airport temporarily closed both runways due to heavy snow.
Further travel disruption is expected on Sunday and Monday and could include power outages, problems with mobile phone coverage and disruption to some rural communities.
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Sky News weather presenter Kirsty McCabe says we can expect the cold to remain ‘for at least a week’ with a mix of ‘winter risks, including frost, ice, sleet, snow and freezing fog’ due to an ‘explosion arctic cold weather”.
“Winter rains will persist in the north of Scotland on Sunday, but are expected to slowly ease elsewhere.
“There will be good periods of sunshine further inland, although parts of central and southern England may remain gray as patches of freezing mist only slowly clear. It will be cold again, freezing where the mist lingers.
“There is a possibility that a swathe of rain, sleet and snow will sweep into parts of south-east England later in the day.”
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A yellow Met Office warning for snow and ice is in place for large parts of Scotland, as well as parts of Wales and south-west England until 12pm on Sunday.
Two further snow and ice warnings will come into force on Sunday: one for the north of Scotland for 24 hours starting at 12pm and another for most of London and parts of south-east England from 6pm on Sunday to 9:00 on Monday.
Gritters have been across the UK trying to keep motorways and other main roads open, while the RAC said on Friday the number of breakdown calls were 25% higher than usual.
The UK Health Security Agency (UKHSA) advises people to look out for friends and family who are vulnerable to cold and to make sure they have access to warm food and drink, adding that people should maintain a core temperature of at least 18°C (64.4°F). ).
Dr Agostinho Sousa, public health medicine adviser at the agency, advised people to ‘keep bedroom windows closed at night’, adding that ‘wearing several layers of clothing will keep you warmer than one layer more often”.