When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation that usually spins quietly above the pole can suddenly send lobes of Arctic ...
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Polar vortex collapse could reshape climate patterns
The polar vortex, a high-altitude ring of westerly winds that usually keeps Arctic air locked near the pole, is showing signs of unusual weakening. If that circulation falters or collapses, the result ...
Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...
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