Flash Flood Warning for I-71 in Clinton and Warren Counties, OH
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 Flash Flood Warning is in effect for northwestern Clinton County and northeastern Warren County in Ohio until 12:15 AM EDT September 21.
This weather record, quickly
- Record type
- Flash Flood Warning
- Affected area
- Southwestern Ohio
- Issued
- September 21, 2026
- Issuing authority
- NWS Wilmington OH
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
Flash Flood Warning issued by NWS Wilmington OH effective September 20 at 9:13 PM EDT until September 21 at 12:15 AM EDT.
Affected Areas
Northwestern Clinton County in southwestern Ohio and northeastern Warren County in southwestern Ohio. Locations that may experience flash flooding include Wilmington, Waynesville, Clarksville, Harveysburg, Corwin, Kingman, Oakland, Ogden, State Route 350 at US Route 22, Caesar Creek State Park, Cowan Lake State Park, Interstate 71 at US Route 68, Burtonville, Oregonia and Fort Ancient. This includes I-71 in Ohio between mile markers 33 and 56.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. To report flash flooding, go to weather.gov/iln and submit your report via social media when you can do so safely.
Expected Conditions
At 9:13 PM EDT, radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible. Flash flooding is ongoing or expected to begin shortly. Hazard is flash flooding caused by thunderstorms.
Timeline
The alert is effective from September 20 at 9:13 PM EDT until September 21 at 12:15 AM EDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Elsewhere in the country: similar length or severity timing 8
Beyond this NWS weather alert's own category, Areazine surfaces two nationwide peer sets: length-matched and severity/date-matched notices from elsewhere in the archive, distinct from the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,269 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to September 21, 2026.
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