...The Flood Warning is extended 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 occurring and minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until late tonight. * IMPACTS...At 11.0 feet, 187th Street threatened in Glenwood. * ADDITIONAL DETAILS... - At 9:30 AM CST Saturday the stage was 10.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CST Saturday was 10.1 feet. - Forecast...The river is expected to rise to a crest of 10.1 feet this afternoon. It will then fall below flood stage this evening. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood