Warmth is weakening the polar vortex. Here’s what it means for extreme cold.
Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...
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Polar Vortex may not be done with Michigan, but only as a side-swipe
The long-range data shows we may be done with a true Arctic air mass similar to what we experienced in January. But we certainly aren't done with normal cold yet.