64
Recorded events
0
Direct deaths
1
Direct injuries
$3.5M
Property damage
Flash Flood in Warren County, Ohio: 64 recorded events between 1996 and 2025. The strongest on record measured 0. That places the county #403 nationally and #9 statewide for this hazard.
Decade by decade
Flash Flood in Warren County, Ohio: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Warren County is the 2010s, when 21 of the county's 64 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Warren County archive, flash flood makes up 9.5% of all recorded severe weather across 7 hazard types. Nationally the county sits at #403 for this hazard and #9 within Ohio, putting it in the 86.8 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Warren County with 18 recorded events, while Oct is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Aug 12, 2001 | MASON | 0 | 0 | 1 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 19, 2025 | STUBBS MILLS | 0 | $0 |
| Jul 19, 2025 | MAINEVILLE | 0 | $0 |
| Jul 19, 2025 | MAINEVILLE | 0 | $0 |
| Jul 19, 2025 | STUBBS MILLS | 0 | $0 |
| Jul 19, 2025 | ROACHESTER | 0 | $0 |
| Jul 19, 2025 | HOPKINSVILLE | 0 | $0 |
| Jul 19, 2025 | ROACHESTER | 0 | $0 |
| Jul 19, 2025 | HOPKINSVILLE | 0 | $0 |
| Jul 19, 2025 | ROACHESTER | 0 | $15K |
| Jul 19, 2025 | STUBBS MILLS | 0 | $0 |
Other hazards here
More from Warren County
- Thunderstorm Wind 368
- Hail 127
- Flood 70
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Persistent heavy rainfall caused county creeks and streams to flood across roads. A section of State Route 350 was washed out by the high water. One hundred fifty people were evacuated from the banks of Turtle Creek while a total of 210 were evacuated across the county. Seventy homes received minor damage and 5 had major damage.
One hundred homes sustained damage with two destroyed from high water. A resident lost six cars when water flooded his garage. Several roads across county sustained minor damage. Total estimate of public assistance is 603,916.
A thunderstorm dropped around 5 inches of rain in just over 2 hours over parts of the county. Several houses were flooded, several roads were flooded including Interstate 71 around Kings Mills, and 135 cars were damaged due to flooding in the parking lot of the King's Island Amusement park.
Quick answers
Frequently asked
How many flash flood events are on record in Warren County, Ohio?
64 flash flood events are recorded in Warren County between 1996 and 2025, causing 0 direct deaths.
What is the strongest flash flood recorded in Warren County?
The strongest flash flood on record in Warren County measured 0.
Where does the flash flood data for Warren County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Warren County, Ohio.” Severe Weather History. severeweatherhistory.com/county/ohio/warren-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.