The National Weather Service has issued a heavy storm warning for Pierce, Pepin and Dunn counties with snowfall rates expected to reach 1-2 inches per hour.

Mike Bardou with the National Weather Service in Chanhassen, Minn., says up to 3 inches per hour is possible in isolated locations.

Bardou also reported that there are unofficial reports from Ellsworth of up to 8 inches of snow already on the ground.

"The heaviest snow will fall south of a line from Chippewa Falls over to Menomonie and over to River Falls," Bardou said.

By the time it ends the NWS expects from 6-10 inches or more.

Bardou added that thunder and lightening is also expected.

The snow should begin to taper off by early afternoon and accumulating snow should be done by 3 p.m., according to Bardou.

The NWS says travel in the heavy snow areas should be limited and that drivers should have a winter driving kit in their cars.