Blizzards are expected to hit parts of the UK over the weekend, with northern Scotland likely to be the worst affected.
A mixture of snow and high winds will affect the north and west coasts of Scotland, with showers moving further inland.
The Met Office has issued yellow "be aware" warnings of snow for Orkney and Shetland, the Highlands, Grampian, Strathclyde, Tayside, Fife and central Scotland.
It has also issued a yellow warning of ice for much of Scotland, north Wales and the north west of England.
The severe conditions are expected to continue through Saturday while the rest of the country will experience close to freezing temperatures.
The Met Office has said light snow or sleet is also expected to fall in isolated showers in some parts of England on Sunday as temperatures fall.
Temperatures will fall to around -1C on Sunday night over much of the east of the country, with parts of Devon and Cornwall also experiencing frosts.
Police have asked motorists to take care on the roads and to check routes before travelling.
Stephen Davenport, a senior meteorologist with MeteoGroup, said: "A blizzard is snow with winds of 25mph or more, and we are looking at 30mph-35mph in exposed areas and 50mph-60mph gusts.
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