High above the North Pole, about 10 to 30 miles above Earth’s surface, sits a massive whirlpool of icy air known as the polar ...
The polar vortex is on the move and will take up a position near Hudson Bay, Canada, directing rounds of Arctic air southward ...
Morning Overview on MSN
Historic polar vortex freezes 40 states for weeks, Deep South hit
The phrase “historic polar vortex” evokes a country locked in ice from the Great Lakes to the Gulf, but the most reliable ...
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