Illinois Severe Flood Warning | Effective 08/01/2026 07:09

Headline: 
Flood Warning issued August 1 at 9:09AM CDT until August 1 at 1:00PM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Expected
Effective: 
August 1, 2026 - 7:09am
Expires: 
August 1, 2026 - 11:00am
Description: 
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Central Cook County in northeastern Illinois... DuPage County in northeastern Illinois... Southeastern Kane County in northeastern Illinois... Kendall County in northeastern Illinois... Northwestern Will County in northeastern Illinois... * WHEN...Until 100 PM CDT. * IMPACTS...Flooding may occur in poor drainage and urban areas. High water may recede slowly from flooded areas. Area creeks and streams are already elevated, increasing the risk of flooding due to additional rainfall. * ADDITIONAL DETAILS... - At 906 AM CDT, Doppler radar and automated rain gauges indicated heavy rain. Flooding is ongoing in the warned area. Between 2 and 4 inches of rain have fallen. - Scattered heavy rain showers late this morning may result in additional rainfall amounts up to 1 inch in the warned area. - Some locations that will experience flooding include... Chicago, Aurora, Joliet, Naperville, Cicero, Evanston, Bolingbrook, Skokie, Berwyn, Wheaton, Oak Park, Downers Grove, Elmhurst, Lombard, Romeoville, Plainfield, Park Ridge and Addison. - 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. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Cook, IL; DuPage, IL; Kane, IL; Kendall, IL; Will, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov