UPDATE 10:15 PM
The severe thunderstorm warnings that were in effect for portions of Will and Cook counties until 10:15 pm have expired. Gusty thunderstorms with heavy rainfall continue to move through the city and the south suburbs with the storms extending from Chicago's South Side to Kankakee. The storms will continue east and move into the Indiana suburbs before clearing the area around midnight.
Temperatures are plunging in the wake of these storms as cooler air sweeps into the area on gusty northwest winds. Readings will drop into the upper 50s and lower 60s by Friday morning across the area as the first blast of the upcoming fall season arrives.
UPDATE 10:05 PM
Severe thunderstorm warnings are in effect for portions of Cook and Will counties until 10:15 pm. Severe thunderstorms with gusts to 60 mph and very heavy rainfall continue to sweep through the metro area with the strongest storms moving through Chicago's south side and the south suburbs.
UPDATE: 9:50 PM
Very heavy rainfall soaking the area
The thunderstorms currently sweeping the Chicago area are producing large amounts of rain in just a short time. At Lake Forest 0.90 inches of rain fell in just 30 minutes near U.S. 41 and Wesley Road and in Geneva 0.81 inches fell in just 0 20 minutes.
UPDATE: 9:40 PM
Storm damage report from Elgin- Numerous trees down on wires at 8:52 pm.
Heavy rainfall of 0.61 inches in 30 minutes from Northbrook near Edens Expressway and Dundee Road.
Wind gusts to 62 mph at Bolingbrook and 54 mph at Naperville
UPDATE 9:35 PM
A line of severe thunderstorms extending from near Evanston southwest to Aurora is moving across the Chicago Metro area. Damaging winds in excess of 60 mph and heavy downpours can be expected from these storms.
UPDATE 9:25 PM
Severe thunderstorm warning issued for portions of Cook DuPage and Will counties
In Carpentersville strong, gusty thunderstorm winds have downed several trees shortly before 9pm.
UPDATE:9:10 PM
The severe thunderstorm warnings previously issued for northern portions of De Kalb and Kane counties expired at 9pm but the line of storms continues east into the immediate Chicago Metro area. Wind gust to 58 mph were reported at Elgin around 9pm as the storms headed east toward northern Cook County. Wind at Batavia were estimated at 50- 55 mph just before 9:15 pm. At Hoffman Estates winds were measured at 49 mph.
Strong gusty winds above 50 mph can be expected with these storms as the move east through the Chicago Metro area.
Issued 8:31 pm
A line of strong thunderstorms sweeping across northern Illinois this evening has produced wind gusts to 50 mph in the Rockford area downing many small branches as it passed through the area about 8pm. The storms appear to be increasing in intensity and could become severe with winds topping 60 mph as it moves across portions of De Kalb and Kane counties by 9pm.
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