Multiple rounds of wintry weather will march across the United States this week, with one storm expected to bring heavy snow to the Mid-Atlantic, from Washington, D.C., to New York, while another just behind it affects a stretch from Kansas City to Chicago.

Overnight, 3-6 inches of snow blanketed southeast Michigan making morning commutes to work Thursday treacherous and closing hundreds of schools and districts, including the Detroit Public Schools, the largest one in the state.