weather NWS severe Cook, IL; Lake, IN June 12, 2026 at 3:33 PM

Flood Warning issued June 12 at 10:33AM CDT until June 13 at 1:00AM CDT by NWS Chicago IL

...The Flood Warning is extended for the following rivers in Illinois...Indiana... Little Calumet River at Munster (Hohman Avenue) affecting Lake IN and Cook Counties. ...The Flood Warning continues for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook

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