Alert USA
weather NWS severe Cook, IL June 18, 2026 at 1:06 AM

Flood Warning

...The Flood Warning continues 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 late tomorrow evening.

* IMPACTS...At 11.5 feet, Glenwood Thornton Road threatened north of Glenwood.

* ADDITIONAL DETAILS... - A

Flooding in Cook, IL can cut off roads with little warning, damage homes near low-lying areas, and disrupt power and water service. Even a few inches of moving water can carry away a vehicle.

This report is based on information from NWS, monitored by Alert USA's verified emergency feed.

Alert USA anticipates a high chance of travel disruptions, elevated property risk in low-lying areas, and possible power outages while the event is active.

Recommended steps: avoid flooded roads — turn around, don't drown; move to higher ground if you are in a low-lying area; charge phones and prepare for power loss; check on family and neighbors.

Alert USA is tracking this flood event and will update this report as verified information becomes available.

Verified by Alert USA • NWS

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