Heavy rain made a fierce comeback overnight, causing airport delays and big road closures including portions of Lake Shore Drive.
Police shut down the northbound lanes of LSD between Chicago and Fullerton early Friday because of flooding. Those lanes were back open and moving by Friday morning rush hour, but standing water persisted in the tunnel from Michigan Avenue to northbound LSD.
Areas along and north of I-88 and I-290 saw some of the heaviest rainfall, though most flooded viaducts and roadways across the suburbs were cleared by morning.
At O'Hare, lightning prevented passengers to board planes, and some were stuck on planes for three hours.
A flash flood watch expired Friday morning for portions of Illinois and northwest Indiana, including Cook, DuPage, Kane, Kendall and Lake counties in Illinois. For the most part, the big cluster of storms cleared the Chicago area, leaving the area to dry out for the next couple days.
In place of rain is a mild, humid Friday with highs between 85 and 90. Heavy fog takes over in some spots Friday evening into Saturday morning, and the weekend begins with very warm temperatures and more humidity.
The Chicago area officially broke a 122-year-old record during Wednesday night's storms, and Thursday rain only added to the books. Isolated thunderstorms return to the forecast on Sunday to cap that record.