A powerful early-season winter storm is sweeping across the northern United States this week, bringing heavy snow, blizzard conditions and a blast of Arctic air that’s expected to drop temperatures for millions of Americans heading into the Thanksgiving holiday.

The National Weather Service’s Weather Prediction Center says a deep, low-pressure system spinning over the Great Lakes is producing blizzard conditions along the south shore of Lake Superior Wednesday, with strong winds blowing and drifting snow and potentially creating whiteout conditions. Winter storm and blizzard warnings stretch across parts of Minnesota, Wisconsin and Michigan, where some areas are expected to see more than half a foot of snow by Thursday, per Newsweek .

In Minnesota, according to MPR News , the first

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