MILWAUKEE — A winter storm warning is expiring in Wisconsin, but not before dozens of school districts called off classes and the mounting snow caused travel delays.

Steady snow fell throughout Wednesday morning piling up to 8 inches at Belgium in Ozaukee County, 7 inches at Beaver Dam in Dodge County and about 6 inches in Milwaukee.

School district administrators in southern and eastern Wisconsin canceled classes, including those in Madison, Dodgeland, Fort Atkinson, East Troy, Fond du Lac and Waupun.

In Milwaukee, the county medical examiner's office is investigating the death of a 68-year-old man who collapsed and died after shoveling snow.

Forecasters warned the coldest air of the season was expected to arrive by Friday with high temperatures in southern Wisconsin not making it out of the single digits.