Illinois Severe Flood Warning | Effective 07/03/2026 11:58

Headline: 
Flood Warning issued July 3 at 1:58PM CDT until July 3 at 4:00PM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Expected
Effective: 
July 3, 2026 - 11:58am
Expires: 
July 3, 2026 - 2:00pm
Description: 
* WHAT...Flooding caused by rainfall continues. * WHERE...A portion of northeast Illinois, including the following counties, Cook and DuPage. * WHEN...Until 400 PM CDT. * IMPACTS...Based on river gauge reports, flooding is occurring along the DuPage River near the Morton Arboretum. Water may start to encroach Illinois Route 53 and other roadways near the river in the area. Recent rainfall this afternoon is likely reinforcing flooding. * ADDITIONAL DETAILS... - At 158 PM CDT, gauge reports indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. - Some locations that will experience flooding include... Aurora, Naperville, Wheaton, Downers Grove, Lombard, Woodridge, Glen Ellyn, Hinsdale, Westchester, Burr Ridge, Oak Brook, Westmont, Lisle, La Grange Park, Warrenville, Western Springs, Willowbrook, Clarendon Hills, Hillside and Oakbrook Terrace. - http://www.weather.gov/safety/flood
Instruction: 
A Flood Warning means flooding is imminent or may already be occurring. Persons along rivers, creeks, and other waterways should take immediate precautions to protect life and property.
Area Description: 
Cook, IL; DuPage, IL
Forcast Office: 
NWS Chicago IL