Winter Storm Warnings have been issued for portions of the Upper Midwest and Great Lakes for Friday. Heavy snow will develop overnight across southern Minnesota and spread rapidly into northeastern Iowa, southern Wisconsin, northern Illinois and northwestern Indiana. Snowfall rates will reach 1 to 2 inches per hour across these areas by early Friday morning with total snowfall from 6 to 9 inches likely. By Friday night the snow will spread eastward into southern Michigan and northern Ohio. The additional snowfall and eventual melting could result in more flooding problems for the Midwest next week.