Flood Warning — Tazewell County, Illinois
Flooding is occurring or imminent along rivers, streams, or low-lying areas.
Current Status
🌊 Active: Flood Warning
Flood Warning issued August 15 at 1:46PM CDT until August 17 at 3:35AM CDT by NWS Lincoln IL
...The National Weather Service in Lincoln IL has issued a Flood Warning for the following rivers in Illinois... Mackinaw River near Congerville affecting Tazewell, McLean and Woodford Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Moderate flooding is forecast. * WHERE...Mackinaw River near Congerville. * WHEN...From this evening to early Monday morning. * IMPACTS...At 13.0 feet, Widespread agricultural flooding occurs. * ADDITIONAL DETAILS... - At 12:45 PM CDT Saturday the stage was 9.9 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of 14.0 feet tomorrow morning. It will then fall below flood stage late tomorrow evening. - Flood stage is 13.0 feet. - http://www.weather.gov/safety/flood
Effective August 15, 2026 at 2:46 PM ET · Expires August 16, 2026 at 7:00 AM ET
Event Details
Event Type
Flood Warning
Severity
severe
Issued By
NWS Lincoln IL
Expires
August 16, 2026 at 7:00 AM ET
Last Checked
2 minutes ago
What To Do
📋 Official NWS Guidance
Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Additional information is available at www.weather.gov.
Also In Effect For
This same Flood Warning also covers:
Other Active Alerts in Illinois
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Frequently Asked Questions
What does a Flood Warning mean for Tazewell County, Illinois?
Flooding is occurring or imminent along rivers, streams, or low-lying areas.
Is this Flood Warning currently active?
Yes — this alert is active as of our last check (2 minutes ago). It's set to expire August 16, 2026 at 7:00 AM ET.
How do I get notified about Flood Warning alerts for Tazewell County?
Download StormCast free on Google Play and set Tazewell 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 Warning is also in effect for Woodford County, McLean County.