The National Weather Service let its severe thunderstorm warning for Kane and McHenry counties expire at 11:30 p.m.
Rain that's perhaps heavy in spots will be moving through the suburbs tonight.
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The service said earlier a six-mile line of storms with big winds and hail was detected on radar out west in DeKalb and other counties.
Quarter-size hail and wind gusts up to 70 mph were predicted as possible for Kane and McHenry counties.
"Hail damage to vehicles is expected. Expect considerable tree damage," the weather service said at 10:40 p.m.