Weather forecasters are predicting Britain’s worst winter since 2010-11’s -21.3C ice blast this Christmas.
Up to five weeks of widespread white-outs is set to grind roads, airports and trains to a standstill.
Northern England and Scotland are said to be bracing for a bumper 24 to 32 days of the snow and ice disruption this winter.
And even the South faces 10 to 14 days’ snow and ice impacts, with the country’s transport infrastructure all risking shutdowns.
The teeth-chattering weather is predicted to blast Britain as early as this week, but the freezes will peak after Christmas.
Forecasters blame the bitter outlook on more Arctic chills and fewer mild Atlantic spells affecting Britain this winter.
The Met Office is also backing up the predictions, with its November to January forecast stating: “The highest chance of any cold weather impacts is towards the end of the period.”
Leon Brown, head of meteorological operations at The Weather Company’s Weather Channel arm, added: “The UK is looking at the coldest winter for eight years, since 2010-11.
“Scotland and parts of northern England are expected to see 24 to 32 days of snow and ice cold weather disruption, with the coldest spells in the New Year.
“Snow and ice are expected in both the South and North, so people should be prepared for significant travel disruption on roads, rail and at airports. Travellers should pay attention to weather warnings.
“The jet stream is expected to slacken, lessening the Atlantic’s influence on our weather and allowing cold conditions from the north to become established.”
The news comes as Brits prepare for a soaking next week as an Atlantic storm prepares to unleash heavy rain and 60mph winds.
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Canadians can expect a "mixed bag" of winter weather in the coming months, according to The Weather Network.
The network is predicting Western Canada will have warmer than normal temperatures this winter, while the eastern half of the country will experience a long-lasting and colder than normal season.
"When you look at the country in two halves, we think winter will end sooner in Western Canada … whereas farther east, we think while it might not be harsh at all times, it does have some longevity and we're going to be begging for spring by the time we get to early March," said The Weather Network's chief meteorologist Chris Scott.
Scott said when the network makes seasonal forecasts it looks at the oceans, specifically the Pacific Ocean, which he called the "engine" that drives global weather patterns.
"This year we have El Nino…. That means warmer than normal water off the coast of South America," said Scott, adding that usually portends a milder winter.
Scott said "nobody is really getting off easy this year," but the western part of the country is the winner for people who don't like the cold.
"But if you want snow in the West, this isn't the best winter for that. If you want to get a prolonged winter it's really Central and Eastern Canada," he said.
The network is predicting an overall long and cold winter across Canada's two most populous provinces, and Scott said the second half of the season will be especially bitter.
He said below-normal temperatures are expected for both Quebec and Ontario, but that doesn't mean every week will see frigid temperatures.
"Through December and even parts of January, this is going to be a back-and-forth kind of winter," he said.
"But we do think the back half of winter has some serious cold to it, and some longevity. That's going to make people rather weary, unfortunately, by the time we hit February and into March," said Scott.
The network is also forecasting fewer winter storms, and overall near-normal amounts of snow for the region.
Scott said the network is forecasting a mild winter for the West Coast, and significantly less snowfall than normal.
"This does not look like one of those epic winters that we can sometimes see," said Scott. "We may get one or two storms that deliver snow, but it does not look like a big snowy winter."
However, he said the overall dry weather pattern will break at times, with the province's South Coast region getting a closer to normal amount of precipitation.
Overall, the network is also forecasting British Columbia will get an early arrival of spring weather.
"We think if any part of the country has got an epic winter in store, it's Atlantic Canada," Scott said.
He said the region will overall get a long and stormy winter, with "significant snowfall" that will persist into spring.
Scott said above-normal amounts of snow are expected for most of Atlantic Canada, particularly the southern part of the region.
The network is forecasting colder than normal temperatures for the northern part of the region, and normal winter temperatures for the southern part of the region.
"We're expecting a roller-coaster of weather" in Manitoba, Saskatchewan and Alberta, said Scott.
The network said the region will be a "battle zone" between the mild Pacific air to the west and Arctic air to the east.
Temperatures are expected to be warmer than normal in Alberta and western Saskatchewan, while temperatures are expected to be closer to normal for eastern Saskatchewan and Manitoba.
Above-normal temperatures are forecasted for Yukon, Northwest Territories and western Nunavut, and near to below-normal temperatures are predicted for eastern Nunavut.
The network said above-normal snowfall is expected across Yukon and into western Northwest Territories. "The rest of the North won't see any major signs of above- or below-normal precipitation," said Scott.