Michigan is bracing for a surge of Arctic air this weekend , with temperatures plunging well below normal across much of the state. The coldest air will hit the Upper Peninsula, where wind chills could dip as low as minus 30 degrees Saturday morning, Dec. 13.

According to the Weather Prediction Center, “The coldest temperatures will be across the Northern Plains, Upper Mississippi Valley, [and] Midwest region where arctic air will be pushing southeast for the end of the week into this weekend.”

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