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Warren County, Ohio severe weather history spans 675 recorded events between 1956 and 2026. The dominant hazard is thunderstorm wind, accounting for 54.5% of all recorded events. It ranks #438 nationally and #9 in Ohio.
675
Recorded events
4
Direct deaths
33
Direct injuries
$55.8M
Property damage
The record
What the Warren County, Ohio severe weather history record shows
Across the archive, Warren County, Ohio severe weather history averages 9.6 recorded events a year. The busiest stretch on record is the 2010s, with 248 events logged in that decade alone. Roughly 27 events fall before 1990 and 648 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The deadliest hazard in the Warren County, Ohio record is flood, responsible for 3 direct deaths. The costliest is tornado, with $41.3M in reported property damage. In total, 7 distinct hazard types appear in this county archive, each listed with its own dated record below.
By hazard type
Every hazard type recorded in Warren County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Thunderstorm Wind | 368 | 0 | $7.3M | 78 | 1964–2026 |
| Hail | 127 | 0 | $2.6M | 4 | 1974–2025 |
| Flood | 70 | 3 | $395K | 0 | 2007–2025 |
| Flash Flood | 64 | 0 | $3.5M | 0 | 1996–2025 |
| Tornado | 35 | 0 | $41.3M | F4 | 1956–2025 |
| Heavy Rain | 6 | 0 | $0 | 0 | 2012–2016 |
| Lightning | 5 | 1 | $750K | 0 | 1998–2010 |
Decade by decade
Warren County, Ohio severe weather history by decade
Reporting practice changed over time — early decades are undercounted, not calmer.
Tornado tracks
Paths crossing this county
34 mapped tornado paths intersect this county: 28 touched down inside it and 6 crossed in from a neighbouring county. This comes from path geometry, not county-tagged reports.
| Date | Scale | Deaths | Injuries | Path length | Origin |
|---|---|---|---|---|---|
| 1999-04-09 | EF4 | 4 | 65 | 10.0 mi | Crossed in |
| 1974-04-03 | EF4 | 2 | 39 | 19.8 mi | Crossed in |
| 1990-06-02 | EF4 | 0 | 37 | 33.0 mi | Crossed in |
| 1969-05-10 | EF3 | 0 | 25 | 54.5 mi | Crossed in |
| 1999-04-09 | EF2 | 0 | 0 | 1.5 mi | Touched down here |
| 1990-09-14 | EF2 | 0 | 6 | 35.0 mi | Touched down here |
| 1975-04-02 | EF2 | 0 | 3 | 1.0 mi | Touched down here |
| 1974-04-03 | EF2 | 0 | 9 | 9.8 mi | Touched down here |
| 2024-05-07 | EF1 | 0 | 0 | 2.6 mi | Touched down here |
| 2024-07-29 | EF1 | 0 | 0 | 8.0 mi | Touched down here |
Significant events
Deadliest events on record in Warren County
| Date | Type | Location | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Mar 3, 2023 | Flood | CROSSWICK | 1 | 0 | $0 |
| Mar 4, 2015 | Flood | OREGONIA | 1 | 0 | $5K |
| Mar 4, 2015 | Flood | OREGONIA | 1 | 0 | $5K |
| May 31, 2004 | Lightning | MORROW | 1 | 0 | $0 |
| May 10, 1969 | Tornado | 0 | 10 | $250K | |
| Apr 3, 1974 | Tornado | 0 | 9 | $2.5M | |
| Sep 14, 1990 | Tornado | 0 | 4 | $2.5M | |
| Apr 3, 1975 | Tornado | 0 | 3 | $2.5M |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
An intense microburst caused extensive damage to homes and businesses across the southern part of the county. Several buildings sustained major damage along Mason-Montgomery Road. Up to fifty windows were blown out at Kings Junior High School. Portions of the roof were damaged and a wall was blown in at the junior high school as well. Numerous buses near the junior high school were severely damaged by flying debris and a nearby shed was destroyed. The fifty foot marquee at Kings Island Amusement Park was blown down and completely destroyed. 36 homes suffered roof damage in Kings Mills. In South Lebanon, a small church and 75 homes sustained damage, including five that were severely damaged. Fifteen vehicles were struck by fallen trees. Trees and power poles were downed in a widespread area. Maximum wind speeds were estimated between 80 and 100 mph.
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.
Context
Risk, population and federal disasters
Relatively Low
FEMA NRI risk rating
250,008
Population (ACS)
$349K
Median home value
13
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| Mar 31, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
| Jun 30, 2012 | Severe Storm | SEVERE STORMS | EM |
| Oct 24, 2008 | Severe Storm | SEVERE WIND STORM ASSOCIATED WITH TROPICAL DEPRESSION IKE | DR |
| Sep 13, 2005 | Hurricane | HURRICANE KATRINA EVACUATION | EM |
| Feb 15, 2005 | Severe Storm | SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES | DR |
Quick answers
Frequently asked
How many severe weather events have been recorded in Warren County, Ohio?
675 events are on record between 1956 and 2026, causing 4 direct deaths and $55.8M in property damage.
What is the most common severe weather hazard in Warren County?
Thunderstorm Wind, with 368 recorded events — 54.5% of everything in the archive for this county.
How many tornadoes have crossed Warren County?
34 mapped tornado paths intersect the county boundary; 28 of them touched down inside it. This is derived from path geometry, not county-tagged reports.
How many federal disaster declarations cover Warren County?
13 federal disaster declarations from FEMA include Warren County, each tied to a specific incident period.
How risky is Warren County compared with the rest of the country?
FEMA's National Risk Index rates Warren County as relatively low risk, placing it in the 78 percentile of its state for expected annual loss.
Where does the Warren County, Ohio severe weather history data come from?
Every figure is drawn from United States federal public-domain records: NOAA/NCEI Storm Events for the event archive, NOAA SPC SVRGIS for mapped tornado paths, FEMA for disaster declarations and risk ratings, and the U.S. Census for population context. Dates are shown in UTC and recent entries may still be revised by NOAA.
Nearby
Neighbouring counties
- Vinton County 251
- Washington County 507
- Van Wert County 354
- Wayne County 485
- Union County 274
- Williams County 196
Cite this page
“Warren County, Ohio.” Severe Weather History. severeweatherhistory.com/county/ohio/warren-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.