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What is the polar vortex? Why it matters as snow and Arctic cold threaten the Northeast
The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or shifts, Arctic air can spill south, increasing the risk of snow and ...
This winter’s harsh run in the East is intensifying, with some of the coldest air so far this season plunging into New York this weekend as a mass of Arctic air drops south from Canada. "A brutally ...
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