OMAHA, Neb. (AP) — A major winter storm dumped more than a foot of snow on parts of the middle of the country while another system blanketed areas of the Southwest, disrupting travel for a second consecutive day Tuesday and shuttering many schools.

Several coronavirus testing sites closed Monday and Tuesday in Nebraska and Iowa, as both states saw 12 to 15 inches (30.5 to 38.1 centimeters) of snow in places. At least 4 inches (10 centimeters) of snow was expected through Tuesday across most of an area stretching from central Kansas northeast to Chicago and southern Michigan.

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