Flood Warning for Illinois River near Havana in Cass, Fulton, Mason Counties
If you are in immediate danger, call emergency services now.
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Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Flood Warning remains in effect for the Illinois River near Havana affecting Cass, Fulton and Mason Counties in Illinois until Saturday evening.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Central Illinois
- Issued
- August 27, 2026
- Issuing authority
- NWS Lincoln IL
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Flood Warning issued by NWS Lincoln IL. Effective from August 27, 2026 at 9:48 AM CDT until August 29 at 7:00 PM CDT.
Affected Areas
Cass, IL; Fulton, IL; Mason, IL. Specifically the Illinois River near Havana.
What You Should Do
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.
Expected Conditions
Minor flooding is occurring and minor flooding is forecast. At 8:45 AM CDT Thursday the stage was 14.8 feet. Bankfull stage is 14.0 feet. Flood stage is 14.0 feet. The maximum river stage in the 24 hours ending at 8:45 AM CDT Thursday was 15.2 feet.
Timeline
The warning is in effect until Saturday evening. The river is expected to fall below flood stage early Saturday afternoon and continue falling to 10.5 feet by Thursday, September 03.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (966 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 27, 2026.
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