Flash Flood Warning Issued for Jersey County, Illinois
This alert is no longer in effect.
NOAA issued it on May 8, 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 Flash Flood Warning is in effect for Jersey County in southwestern Illinois until 10:30 PM CDT, with heavy rain from thunderstorms potentially causing flash flooding.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southwestern Illinois
- Issued
- May 8, 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 Southwestern Illinois.
Alert Details
A Flash Flood Warning has been issued by the National Weather Service (NWS) St Louis MO. It is effective from 5:32 PM CDT until 10:30 PM CDT on April 27, 2026.
Affected Areas
The warning affects Jersey County in southwestern Illinois, including the locations of Jerseyville, Brighton, Grafton, Elsah, Kemper, Fieldon, Otterville, Fidelity, McClusky, Delhi, and Nutwood.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
Expected Conditions
Doppler radar indicates thunderstorms producing heavy rain. Between 1 and 3 inches of rain have fallen, with additional rainfall amounts of 1 to 2 inches possible. Flash flooding is ongoing or expected, affecting small creeks and streams, urban areas, highways, streets, underpasses, and other poor drainage and low-lying areas.
Timeline
The alert is effective from 5:32 PM CDT on April 27, 2026, and expires at 10:30 PM CDT on the same day.
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 (1,043 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 8, 2026.
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