A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 48 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 48 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by late tonight at 145 AM CST.

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. ...FLOOD WARNING IN EFFECT UNTIL TOMORROW AFTERNOON... * WHAT...Minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until tomorrow afternoon. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS... - At 7:15 AM CST Friday the stage was 8.8 feet. - Forecast...The river is expected to rise above flood stage late this morning to a crest of 9.3 feet this afternoon. It will then fall below flood stage later today. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood &&