Alert USA
weather NWS minor Cook, IL; Lake, IN June 18, 2026 at 12:02 AM

Flood Advisory

* WHAT...Rivers to remain near bankfull and may result in localized flooding near streams and rivers.

* WHERE...Portions of northeast Illinois, including the following county, Cook and northwest Indiana, including the following county, Lake IN.

* WHEN...Until midnight CDT tonight.

* IMPACTS...Creeks and streams may rise to near bankfull.

* ADDITIONAL DETAILS... - At 659 PM CDT, Gauges report rising streams and rivers due to earlier heavy rainfall. - Some locations that will experience floodi

Flooding in Cook, IL; Lake, IN 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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