Flood Warning Issued for Thorn Creek in Cook County Through Saturday Evening

Alert Details

The National Weather Service in Chicago IL has issued a Flood Warning for Thorn Creek at Thornton, affecting Cook County. The alert was issued early Saturday morning and remains in effect until 10:00 PM CST.

Affected Areas

The warning specifically covers Thorn Creek from near Glenwood downstream to the confluence with the Little Calumet River. This includes the Thornton gauge area within Cook County, Illinois.

What You Should Do

A Flood Warning indicates that water levels above flood stage are imminent or already occurring. Residents and travelers along rivers and streams in the warned area should take immediate precautions to protect life and property. The NWS advises individuals to avoid these areas and monitor local updates.

Expected Conditions

Minor flooding is forecast for the region. As of 12:45 AM CST Saturday, the river stage was recorded at 8.8 feet. The river is expected to rise above the flood stage of 9.0 feet early this morning, reaching a crest of approximately 10.1 feet. While the current forecast crest is below the 11.0-foot mark that threatens 187th Street in Glenwood, residents should remain vigilant as conditions evolve.

Timeline

The Flood Warning is effective as of 1:09 AM CST and is expected to begin impacting the area around 1:37 AM CST. The river is projected to fall below flood stage late this afternoon, with the warning officially expiring at 10:00 PM CST on Saturday, March 7.