Lake snows whiten sections of northern Indiana’s snowbelt east of Porter County and north into western Lower Michigan Tuesday. Such snows fall with the greatest intensity when incoming winds have traveled farthest over open lake water. But Tuesday’s winds are to back from NNW to NW with time. This means the lake snows they support will move with time, limiting the period of most significant snowfall in any one area. This should prevent gargantuan totals. The hardest hit areas should see 3-5”—locally a bit more. These totals threaten hazardous travel conditions around the southeast end of Lake Michigan.
Much colder air hits late Wednesday night through Friday and lake snowfall in that outbreak could be more substantial, focused again on areas east of Chicago.
Incoming mild air sets up an area of overrunning light snow Tuesday night. This threatens to dust a broad swath of the Chicago area with a trace to as much as half an inch of snow.
-Tom Skilling
WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.
