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More rain expected today after storm leaves thousands in the dark

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Updated: June 30, 2013 6:51AM

About 4,000 customers remained without electricity early Wednesday after overnight storms that had, at one point, knocked out power for up to 21,000. More rain and temperatures in the 80s are expected.

Tuesday evening’s storms brought 60 mph wind gusts and hailstones, along with the torrential 1- to 2-inch downpours within an hour or less, National Weather Service said.

The southern suburbs were hardest hit, with 10,500 ComEd customers without power, spokeswoman Krissy Posey said. About 9,000 people in Chicago were in the dark, and 1,100 people in the northern metro area were without electricity. About 220 west suburban homes were without power.

Viaducts throughout the city flooded, and crews responded to downed and arcing power lines, according to Chicago Fire Department officials. No injuries have been reported.

Midway Airport, on the city’s Southwest Side, saw 1.96 inches of rain in about an hour-and-15-minute span, according to Weather Service Meteorologist Mike Bardou.

In the southwest suburbs, Bolingbrook saw 1.46 inches of rain, most of which fell in just 45 minutes. Romeoville, home to the National Weather Service headquarters, saw an inch of rain, and Frankfort saw about 0.8 inches.

The downpour left three-quarters of an inch of rain in south suburban Tinley Park in about 40 minutes. West suburban Woodridge was soaked with 1.35 inches of rain as of Tuesday night.

Northwestern Will County, southern and central Cook County and southern DuPage County were under a flash flood warning until 2:30 a.m. because of the “excessive” storm runoff.

Forecasters earlier issued a tornado warning for west-central Will County and east-central Grundy County after spotting a thunderstorm with rotating winds near Elwood, but that warning was called off about 9 p.m.

Strong winds uprooted large trees near Coal City, and blew the roof off a machine shed near Marseilles in LaSalle County, Bardou said. Forecasters could not say Tuesday night whether a tornado caused that damage.

In Downstate Galesburg, about 45 miles northwest of Peoria, security cameras at Carl Sandburg College captured a flash flood pushing in the doors after almost 3 inches of rain in about 90 minutes.

Temperatures are expected to fall to about 70 degrees overnight.

Thursday’s outlook is similar, though the rain isn’t expected to return to the area until the early evening, according to the weather service.

Friday’s temperatures should be cooler, albeit slightly, with a high temperature near 75 degrees.

Rain will creep back into the area Friday night and is expected to remain until midday Saturday.

Security footage showing flash flood at Carl Sandburg College

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