Heavy rains have forced partially lane reductions on several major roadways in the Chicago area.
Illinois state police say two lanes of eastbound 290 are closed at Des Plaines due to standing water.
Standing water also reported near the Circle Interchange and near Lake Shore Drive.
The National Weather Service has issued a flash flood warning for portions of Cook of DuPage counties until 3:30 a.m.
Thunderstorms producing heavy rain across the Chicago area have produced up to two inches of rain already. Another one to two inches of rain is possible.
Tom Skiling reports "the areas which have been lambasted hardest is a swath of Cook and DuPage Counties extending from near Wheaton eastward across Oakbrook, Westchester, LaGrange, Hinsdale, Brookfield, Hillside, Maywood, Oak Park, Cicero, Stickney, Leydon and the heart of Chicago north to Evanston and Wheeling. Pilot Anson Mount, who flies out of Waukegan Airport sends is this shot of the deluge-generating rainshaft in one of this evening’s slow moving storms."