Flood Advisory — La Salle County, Illinois
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Current Status
🌊 Active: Flood Advisory
Flood Advisory issued August 9 at 11:23PM CDT until August 10 at 3:30AM CDT by NWS Chicago IL
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northern Livingston County in central Illinois... Southern La Salle County in north central Illinois... Grundy County in northeastern Illinois... Kendall County in northeastern Illinois... * WHEN...Until 330 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 1122 PM CDT, Doppler radar indicated slow moving thunderstorms producing rainfall rates of 1 to 2 inches per hour moving into the area. Minor flooding may began shortly after the onset of rainfall. - Some locations that will experience flooding include... Yorkville, Streator, Morris, Channahon, Minooka, Coal City, Dwight, Diamond, Gardner, Odell, Mazon, South Streator, Newark, Braceville, Cornell, South Wilmington and Millington. - http://www.weather.gov/safety/flood
Effective August 10, 2026 at 12:23 AM ET · Expires August 10, 2026 at 4:30 AM ET
Event Details
Event Type
Flood Advisory
Severity
minor
Issued By
NWS Chicago IL
Expires
August 10, 2026 at 4:30 AM ET
Last Checked
1 minute ago
What To Do
📋 Official NWS Guidance
A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters.
Also In Effect For
This same Flood Advisory also covers:
Other Active Alerts in Illinois
Flood Advisory
Flood Advisory
Severe Thunderstorm Watch
Flash Flood Warning
Flood Advisory
Severe Thunderstorm Watch
Get Flood Advisory Alerts for La Salle County
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Frequently Asked Questions
What does a Flood Advisory mean for La Salle County, Illinois?
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Is this Flood Advisory currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 10, 2026 at 4:30 AM ET.
How do I get notified about Flood Advisory alerts for La Salle County?
Download StormCast free on Google Play and set La Salle County, Illinois as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flood Advisory is also in effect for Kendall County, Grundy County, Livingston County.