Flood Warning — Piatt 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 8:39PM CDT until August 20 at 10:00AM CDT by NWS Lincoln IL
...The Flood Warning continues for the following rivers in Illinois... Sangamon River at Monticello affecting Piatt County. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Moderate flooding is forecast. This approaches the flood of record. * WHERE...Sangamon River at Monticello. * WHEN...From late tonight to late Thursday morning. * ADDITIONAL DETAILS... - At 8:00 PM CDT Saturday the stage was 12.1 feet. - Forecast...The river is expected to rise above flood stage just after midnight tonight to a crest of 17.3 feet early Monday afternoon. It will then fall below flood stage early Thursday morning. - Flood stage is 13.0 feet. - http://www.weather.gov/safety/flood
Effective August 15, 2026 at 9:39 PM ET · Expires August 16, 2026 at 1:45 PM ET
Event Details
Event Type
Flood Warning
Severity
severe
Issued By
NWS Lincoln IL
Expires
August 16, 2026 at 1:45 PM 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.
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Frequently Asked Questions
What does a Flood Warning mean for Piatt 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 1:45 PM ET.
How do I get notified about Flood Warning alerts for Piatt County?
Download StormCast free on Google Play and set Piatt 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.