Urban and Small Stream Flood Warning for a good portion of the Chicago area overnight and early Sunday morning – Lakeshore Flood Advisory for Cook and Lake County, IL shoreline ends

3:15AM CDT…

Due to widespread 2 to 3-inch-plus rains, an Urban and Small Stream  Flood Warning is in effect for a good portion of northeast Illinois until 8:45AM CDT Sunday morning – this includes Kendall, Lake, LaSalle, Will, DeKalb, Grundy, Kankakee, Kane, McHenry, DuPage, Cook and Boone Counties (light-green-shaded counties on the headlined map). Numerous streets and viaduct flooding reports have been received.  Following are a few of the heavier rainfall reports…4.22-inches at Streator in LaSalle County, 3.45-inches 3 miles SW of Midway Airport, 3.14-inches at Bridgeport in Cook County, 3.02-inches at Downers Grove in DuPage County, 2.90-inches at Oak Lawn in Cook County and 2.74-inches in Flossmoor in Cook County.

The Lakeshore Flood Advisory for the Lake and Cook County Lake Michigan Shoreline will expire at 5AM CDT.

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Heavy rains in excess of 2-inches have been reported at several Chicago-area locations this evening, and an overnight Urban and Small Stream Flood Advisory has been issued for 11 northeast Illinois Counties including…Kendall, Lake, LaSalle, Will, DeKalb, Grundy, Kankakee, Kane, McHenry, DuPage, and Cook Counties (Light-green-shaded countries on the headlined map). An additional half to 1-inch of rain may fall before ending from the west later tonight.

A  Lakeshore Flood Advisory is in effect overnight for the Cook and Lake County, Illinois Lake Michigan shoreline. East to northeast winds will strengthen gusting over 40 miles per hour. Waves building 8 to 11 feet combined with the near record-high lake levels will result in flooding in typical flood-prone areas.

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