Flood Warning Issued for Jackson and Randolph Counties in Illinois and Perry and Ste. Genevieve Counties in Missouri
This alert is no longer in effect.
NOAA issued it on May 7, 2026, 3 months 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.
A Flood Warning has been issued by the National Weather Service for parts of Illinois and Missouri, with minor flooding expected on the Mississippi River at Chester starting Wednesday morning.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Southern Illinois and Southeastern Missouri
- Issued
- May 7, 2026
- Issuing authority
- NWS St Louis MO
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 months ago; use the issuing agency's live warning service for current conditions in Southern Illinois and Southeastern Missouri.
Flood Warning Alert
Alert Details
A Flood Warning has been issued by the National Weather Service (NWS) St Louis MO. It is effective from its issuance on April 27, 2026, at 3:05 PM CDT, with onset at 7:00 AM CDT on April 29, 2026.
Affected Areas
The warning affects Jackson and Randolph counties in Illinois, and Perry and Ste. Genevieve counties in Missouri, specifically the Mississippi River at Chester.
What You Should Do
Motorists should not attempt to drive around barricades or drive cars through flooded areas. Rainfall heavier than forecast could cause river levels to rise, so monitor conditions and check https://water.noaa.gov/wfo/lsx for updates.
Expected Conditions
Minor flooding is forecast, with the Mississippi River at Chester expected to rise above the 27.0-foot flood stage and crest at 32.0 feet early Sunday morning. The current stage is 25.1 feet as of 3:00 PM CDT Monday.
Timeline
The alert was sent on April 27, 2026, at 3:05 PM CDT, becomes effective at 7:00 AM CDT on April 29, 2026, and expires at 3:15 AM CDT on April 29, 2026, though it is in effect from Wednesday morning until further notice.
Original source: NOAA Official Notice ↗
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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 (1,147 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 7, 2026.
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