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Rare polar vortex split to freeze millions of Americans - chilling path of severe weather event mapped
Forecasters warn that a split polar vortex is set to bring a 'large supply of cold air' to North America in mid-February as a ...
Map Shows Coldest Places in US as Polar Vortex Descends
According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is ...