Source: James Gilbert, CBS17, 1/12/21

The buzzword made famous from an arctic blast in 2015 is making a comeback. The polar vortex, a rotating bubble of cold air around the North Pole, is about to break off and head into much of the United States for the second half of January. The polar vortex gets its name from a counter-clockwise spin around the North Pole. The constant air mass is protected by the polar jet stream. It weakens in the summer and strengthens in the winter.

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