WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.

Hot, humid air sits over Chicago through Thursday

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Northeast Illinois was served up a severe weather mix Sunday, and more of the same could be in store for the next few days. A nearly stationary front will be oriented west-east through southern Wisconsin just north of the Illinois border, and southerly winds will maintain hot, humid conditions over the metro area most likely into Thursday.
Early Sunday morning, strong thunderstorms spread into northern Illinois dumping from a half inch of rain along the Interstate 88 corridor to as much as 3 inches along the Illinois-Wisconsin border. Then later in the afternoon, very strong thunderstorms fired primarily along and south of Interstate 80 with torrential downpours of 1-2 inches per hour prompting flash flood warnings. Outflow winds gusted to 70 m.p.h. at Crete in southern Cook County, and a small tornado reportedly touched down in Romeoville.
Timing is difficult, but the next organized surge of storms may be due later tonight and Tuesday.
--By Paul Dailey, WGN Weather Center Meteorologist