Beach Hazards Statement issued July 27 at 9:16PM CDT until July 29 at 10:00AM CDT by NWS Chicago IL
Issue date: 2026-07-28T02:16+00:00
* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 6 to 9 feet expected. * WHERE...In Illinois, Lake, Northern Cook and Central Cook Counties. In Indiana, Lake and Porter Counties. * WHEN...Through Wednesday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.
Flood Warning issued July 27 at 7:56PM CDT until July 28 at 2:51PM CDT by NWS Chicago IL
Issue date: 2026-07-28T00:56+00:00
...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. For the Thorn Creek...including Thornton...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until early Tuesday afternoon. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS... - At 7:45 PM CDT Monday the stage was 8.2 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of 9.6 feet just after midnight tonight. It will then fall below flood stage Tuesday morning. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
