A blast of frigid air from Canada is expected to dump up to a foot of snow along a stretch extending from Michigan to central New England and put more than 16 million Americans under winter storm advisories, forecasters said on Monday.

The storm, which was already dropping light snow from Iowa to Kansas on Monday morning, should strengthen as it rolls eastward, said meteorologist Rich Otto of the National Weather Service’s Weather Prediction Center. The bad weather, which will affect the Central Plains, Midwest and Northeast, is expected to be at its worst late on Monday into Tuesday.

“This is a preview of winter, and I guess it’s good if you like snow,” Otto said.

The snow may miss some areas east of Interstate 95, a major north-south corridor that hugs the Atlantic Coast, but resident

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