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A potential wobble in the polar vortex could bring Arctic air to Michigan and the northern U.S. around Thanksgiving.

A weakened polar vortex, combined with other atmospheric patterns, increases the chance of cold outbreaks and lake-effect snow.

Forecasters expect swings between warm and cold weather, with a higher chance of below-normal temperatures for Michigan by early December.

The Climate Prediction Center has updated its forecast to show below-average temperatures for about half the country through late November.

Michigan is in store for a warmer weekend, but could see a return of Arctic air around Thanksgiving as models suggest a possible "wobble" in the polar vortex, which could push frigid air into the northern U.S.

It’s unclear whether this event will b

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