Flood Warning Issued for Cass, Fulton, Mason Counties in Illinois
This alert is no longer in effect.
NOAA issued it on July 29, 2026, 3 weeks ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Lincoln IL has issued a Flood Warning for the Illinois River near Havana affecting Cass, Fulton and Mason Counties until further notice.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Central Illinois
- Issued
- July 29, 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: historical. It was issued 3 weeks ago; use the issuing agency's live warning service for current conditions in Central Illinois.
Alert Details
Flood Warning issued by NWS Lincoln IL. Effective from June 21, 2026 at 11:14 AM CDT. Remains in effect until further notice.
Affected Areas
Illinois River near Havana affecting Mason, Fulton and Cass Counties in Illinois.
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.
Expected Conditions
Moderate flooding is occurring and moderate flooding is forecast. At 10:45 AM CDT Sunday the stage was 18.6 feet. The river is expected to rise to a crest of 19.6 feet Friday morning. Flood stage is 14.0 feet. At 19.5 feet, access road to Anderson Lake north campground closed.
Timeline
Effective June 21, 2026 at 11:14 AM CDT until further notice.
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 (829 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 29, 2026.
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