Lake effect snow, maybe up to 8 inches, could fall along the Lake Michigan shoreline in southeast Wisconsin by Tuesday afternoon, forecasters say.
The National Weather Service Monday evening upgraded a winter weather advisory for Milwaukee County to a winter storm warning for 4 to 8 inches of snow. It remains in effect until noon Tuesday.
The warning also applies to Racine and Kenosha counties.
"Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute," the weather service said in a statement.