The harshest winter conditions in 20 years are heading for Michigan's Lower Peninsula, with up to 15 inches of snow forecast for parts of the state followed by temperatures diving as low as minus 15.

The harshest winter conditions in 20 years are heading for Michigan's Lower Peninsula, with up to 15 inches of snow forecast for parts of the state followed by temperatures diving as low as minus 15.

The National Weather Service predicts "the coldest temperatures Southeast Michigan has experienced in about 20 years."

It says snowfall will total 8-15 inches by late Sunday and a drop in temperatures of up to 45 degrees by Monday.

Michigan residents have been crowding stores seeking supplies.

Despite the dire warnings, conditions were relatively balmy Sunday morning, with snow falling in most of Michigan but temperatures as high as 32 degrees in the far southeast. Ironwood in the western Upper Peninsula was the state's cold spot at 10 a.m. EST with a reading of minus 13.