Clermont County, Ohio
County storm and disaster record · FIPS 39025 · population 208,527 · 453 sq mi
NOAA's Storm Events Database holds 837 records for Clermont County, Ohio from 1950 through June 30, 2026, on 541 days; the most frequent are severe thunderstorm wind events (367 records). The deadliest single record is the March 2, 2012 tornado: 3 deaths, 13 injuries and $7.3 million in damage in 2025 dollars. FEMA has issued 19 declarations naming the county since 1968, 17 of them for natural hazards; the latest for a natural hazard was “Severe Storms, Straight-Line Winds, Tornadoes, Flooding, and Landslides” on October 2, 2026.
The record, 1950 to 2026
Storm records filed for the county each year (2026 to June 30, 2026). Before 1996 NOAA recorded only tornadoes (from 1950), thunderstorm wind and hail (from 1955).
- recorded, no damage figure
- under $100,000
- $100,000 or more
- $1 million or more
- $10 million or more, or a death
- $100 million or more, or 10 deaths
- a year's colour: its recorded damage or deaths
- a year with a death
- 1955: wind and hail recorded from 1955
- 1996: all 48 event types from 1996
- Storm records
- 837on 541 days, 1950 to June 30, 2026
- Deaths recorded
- 960 injuries
- Damage, 2025 dollars
- $96Mas filed (scale steps before 1993)
- Tornadoes
- 26strongest F4
- FEMA declarations
- 19latest 2026
Source: NOAA NCEI Storm Events Database, records through June 30, 2026 (file revision 20260918); damage converted to 2025 dollars with the BLS CPI-U. Search the record at NCEI. BLS consumer price index.
What hazards hit Clermont County most?
The most frequent records are severe thunderstorm wind events: 367 since 1965. 42% of its severe thunderstorm wind events since 1965 fell in June and July. The rank column places the county among Ohio's counties by days with a record per 1,000 square miles of land over each hazard's complete period.
| Hazard | Records | Days | First, last | Killed | Injured | Damage | Rank in state |
|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 367 | 249 | 1965-2026 | 0 | 1 | $4.9M | 12 of 88 |
| Floods | 155 | 105 | 1996-2026 | 2 | 0 | $11M | 4 of 88 |
| Winter storms | 129 | 128 | 1996-2026 | 1 | 1 | $943K | 17 of 88 |
| Hail | 119 | 79 | 1977-2025 | 0 | 0 | $5.4M | 22 of 88 |
| Tornadoes | 26 | 22 | 1953-2023 | 4 | 53 | $42M | 17 of 88 |
| High wind and dust storms | 19 | 18 | 2000-2026 | 2 | 0 | $31M | 57 of 88 |
| Heat | 8 | 8 | 1999-2023 | 0 | 0 | – | 12 of 88 |
| Lightning | 6 | 6 | 1996-2002 | 0 | 5 | $115K | 10 of 88 |
| Extreme cold | 4 | 4 | 1996-2022 | 0 | 0 | $806K | 70 of 88 |
| Drought | 2 | 2 | 1999-1999 | 0 | 0 | – | 65 of 88 |
| Heavy rain | 2 | 2 | 2011-2015 | 0 | 0 | – | 47 of 88 |
Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.
How many tornadoes has Clermont County had?
NOAA records 26 tornadoes in Clermont County from 1953 to 2023, the strongest rated F4, with 4 deaths and 53 injuries recorded in the county. That is 17th of 88 Ohio counties by days with tornadoes per 1,000 square miles since 1950. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.
Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 26 tornadoes whose track touched Clermont County since 1950 (NOAA's county records number 26, the same count); along their whole tracks they killed 8 people, 4 of them in Clermont County.
| Date | Tornado | Rating | Path | Killed |
|---|---|---|---|---|
| 1969-08-09 16:57, as SPC files it | Cincinnati | F3 | 22.2 mi | 4 |
| 2012-03-02 15:39, as SPC files it | Moscow to HamersvilleCrossed KY, OH | EF3 | 20.41 mi | 3 |
| 1968-04-23 12:56, as SPC files it | Summerside | F4 | 24.1 mi | 1 |
| 1997-07-02 18:30, as SPC files it | Felicity | F3 | 12 mi | 0 |
Map of the strongest tornado tracks in Ohio.
Every tornado record filed for Clermont County (26)
| Date | Place | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2023-03-03 | Nicholsville, Clermont County | EF0 1.29 mi x 200 yd | 0 | 0 | $97K |
| 2022-07-06 | Goshen, Clermont County | EF2 4.81 mi x 500 yd | 0 | 2 | $3.0M |
| 2022-07-06 | Branch Hill, Clermont County | EF1 2.24 mi x 100 yd | 0 | 0 | $101K |
| 2020-04-08 | Edenton, Clermont County | EF0 0.8 mi x 75 yd | 0 | 0 | $29K |
| 2020-04-08 | Newtonsville, Clermont County | EF0 5.92 mi x 200 yd | 0 | 0 | $29K |
| 2018-02-25 | Moscow, Clermont County | EF1 3.5 mi x 200 yd | 0 | 0 | $100K |
| 2017-03-26 | Clover, Clermont County | EF1 0.31 mi x 70 yd | 0 | 0 | $36K |
| 2017-03-01 | Blairsville, Clermont County | EF1 6.39 mi x 150 yd | 0 | 0 | $482K |
| 2012-09-07 | Williams Corners, Clermont County | EF0 0.21 mi x 25 yd | 0 | 0 | $51K |
| 2012-03-02 | Moscow, Clermont County | EF3 11.04 mi x 440 yd | 3 | 13 | $7.3M |
| 2011-05-23 | Moores Fork, Clermont County | EF0 0.21 mi x 33 yd | 0 | 0 | $39K |
| 2009-05-30 | Bethel, Clermont County | EF0 0.47 mi x 20 yd | 0 | 0 | $1K |
| 2006-07-11 | Goshen, Clermont County | F1 1 mi x 350 yd | 0 | 0 | $146K |
| 2006-07-11 | Milford, Clermont County | F0 0.1 mi x 30 yd | 0 | 0 | $3K |
| 1999-08-24 | Loveland, Clermont County | F0 2 mi x 500 yd | 0 | 0 | $44K |
| 1997-07-02 | Moscow, Clermont County | F3 12 mi x 500 yd | 0 | 0 | $3.7M |
| 1996-05-08 | Neville, Clermont County | F0 1 mi x 100 yd | 0 | 0 | $56K |
| 1995-08-05 | Neville, Clermont County | F1 4 mi x 90 yd | 0 | 0 | $58K |
| 1990-06-02 | Clermont County | F2 4 mi x 200 yd | 0 | 0 | $250K step |
| 1980-04-08 | Clermont County | F1 5.1 mi x 40 yd | 0 | 2 | $250K step |
| 1978-06-12 | Clermont County | F1 0.5 mi x 17 yd | 0 | 0 | $25K step |
| 1978-06-12 | Clermont County | F0 1 mi x 50 yd | 0 | 0 | $25K step |
| 1976-06-24 | Clermont County | F0 5.6 mi x 33 yd | 0 | 0 | $250K step |
| 1969-08-09 | Clermont County | F3 10.3 mi x 400 yd | 0 | 7 | $250K step |
| 1968-04-23 | Clermont County | F4 15.8 mi x 100 yd | 1 | 29 | $2.5M step |
| 1953-04-15 | Clermont County | F1 2 mi x 33 yd | 0 | 0 | $25K step |
A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.
Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.
When was the last damaging storm in Clermont County?
The most recent record with damage, injuries or deaths is the June 18, 2026 flash flood ($4,000 in damage in 2025 dollars).
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-06-18 | Flash FloodStonelick, Clermont County | 0 | 0 | $4K | |
| 2026-06-18 | Thunderstorm WindBatavia Clrmnt Co Ar, Clermont County | 45 kt wind | 0 | 0 | $1K |
| 2026-03-22 | Thunderstorm WindSummerside, Clermont County | 50 kt wind | 0 | 0 | $2K |
| 2026-03-13 | Strong WindClermont County · forecast zone Clermont | 43 kt wind | 0 | 0 | – |
| 2026-03-13 | High WindClermont County · forecast zone Clermont | 50 kt wind | 1 | 0 | – |
| 2026-02-03 | Winter WeatherClermont County · forecast zone Clermont | 0 | 0 | – | |
| 2026-01-24 | Winter StormClermont County · forecast zone Clermont | 0 | 0 | – | |
| 2025-12-28 | Thunderstorm WindBethel, Clermont County | 50 kt wind | 0 | 0 | $1K |
| 2025-12-28 | Thunderstorm WindNicholsville, Clermont County | 50 kt wind | 0 | 0 | $1K |
| 2025-12-28 | Thunderstorm WindMt Holly, Clermont County | 45 kt wind | 0 | 0 | $3K |
| 2025-12-13 | Winter StormClermont County · forecast zone Clermont | 0 | 0 | – | |
| 2025-12-01 | Winter StormClermont County · forecast zone Clermont | 0 | 0 | – |
Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.
The deadliest and costliest records
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2012-03-02 | TornadoMoscow, Clermont County The tornado initially touched down in south central Campbell County at 1639 EST near Peach Grove Road and crossed Fisher Road northwest of Peach Grove. The tornado then crossed into Pendleton County at 1641 EST after producing high end EF3 damage along Reid Ridge Road near the Campbell and Pendleton County line. The ... | EF3 11.04 mi x 440 yd | 3 | 13 | $7.3M |
| 2010-06-09 | FloodCedron, Clermont County Heavy rain allowed for Bullskin Creek to rise. Two boys, ages 8 and 11, were killed when they were swept away in the rising water after they went to look at the high water. | 2 | 0 | $4K | |
| 1968-04-23 | TornadoClermont County | F4 15.8 mi x 100 yd | 1 | 29 | $2.5M step |
| 2007-02-13 | Ice StormClermont County · forecast zone Clermont Thousands of trees were downed. Four tenths of an inch of ice accumulation was observed in Williamsburg. Several thousand people were without power. Power was still out 4 days later in some locations. A nine year old girl, Natalie Fossier, was killed by a falling ice covered branch while walking her dog. The accident ... | 1 | 1 | – | |
| 2026-03-13 | High WindClermont County · forecast zone Clermont At approximately 11:45, a large tree fell on a house 3 miles east-northeast of Owensville. The tree fell through a house, killing a 61 year old male. | 50 kt wind | 1 | 0 | – |
| 2000-12-11 | High WindClermont County · forecast zone Clermont A strong low pressure system dragged a sharp cold front across the region dropping temperatures by 30 degrees. Very strong winds occurred along and behind the front with numerous locations receiving gusts over 58 mph. The highest recorded gust was 69 mph in Ostrander in Delaware county. Numerous trees, large limbs, ... | 58 kt wind | 1 | 0 | – |
| 1969-08-09 | TornadoClermont County | F3 10.3 mi x 400 yd | 0 | 7 | $250K step |
| 2002-08-18 | LightningMilford, Clermont County Three people were injured when lightning struck in Miami Meadows Park. | 0 | 3 | – |
A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2008-09-14 | High WindClermont County · forecast zone Clermont | 54 kt wind | 0 | 0 | $31M |
| 2012-03-02 | TornadoMoscow, Clermont County | EF3 11.04 mi x 440 yd | 3 | 13 | $7.3M |
| 1997-03-02 | FloodClermont County · forecast zone Clermont | 0 | 0 | $5.5M | |
| 2002-04-19 | HailMilford, Clermont County | 1.00 in hail | 0 | 0 | $4.1M |
| 1997-07-02 | TornadoMoscow, Clermont County | F3 12 mi x 500 yd | 0 | 0 | $3.7M |
| 2022-07-06 | TornadoGoshen, Clermont County | EF2 4.81 mi x 500 yd | 0 | 2 | $3.0M |
| 2001-07-17 | Flash FloodCountywide, Clermont County | 0 | 0 | $3.0M | |
| 1996-01-23 | FloodClermont County · forecast zone Clermont | 0 | 0 | $1.9M |
Before 1993 NOAA filed damage by category, not amount, so the list above starts in 1993. The highest category filed here before then (entered as $2.5M, in the dollars of the day) holds: April 23, 1968 (tornado, Clermont County, 1 killed).
Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.
Is it getting more frequent?
Records per decade for Clermont County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).
| Hazard | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020-26 |
|---|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 0 | 3 | 3 | 16 | 66 | 67 | 121 | 91 |
| Floods | – | – | – | – | 22 | 52 | 61 | 20 |
| Winter storms | – | – | – | – | 11 | 23 | 65 | 30 |
| Hail | 0 | 0 | 1 | 6 | 18 | 34 | 43 | 17 |
| Tornadoes | 1 | 2 | 3 | 1 | 5 | 3 | 6 | 5 |
| High wind and dust storms | – | – | – | – | 0 | 8 | 5 | 6 |
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
42% of its severe thunderstorm wind events since 1965 fell in June and July. The two busiest months are in violet.
The values, month by month
Jan 56 · Feb 60 · Mar 67 · Apr 112 · May 103 · Jun 135 · Jul 139 · Aug 71 · Sep 25 · Oct 8 · Nov 23 · Dec 38 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Clermont County
FEMA's register lists 19 declarations that include Clermont County: 13 major disasters, 6 emergencies and 0 fire management assistance declarations. Most were for severe storm (8) and flood (4).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2026-10-02 | DR-4945 | Flood | Severe Storms, Straight-Line Winds, Tornadoes, Flooding, and Landslides |
| 2020-03-31 | DR-4507 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3457 | Biological | Covid-19 |
| 2012-06-30 | EM-3346 | Severe Storm | Severe Storms |
| 2011-07-13 | DR-4002 | Severe Storm | Severe Storms and Flooding |
| 2008-10-24 | DR-1805 | Severe Storm | Severe Wind Storm Associated With Tropical Depression Ike |
| 2008-04-24 | EM-3286 | Snowstorm | Record Snow and Near Record Snow |
| 2005-09-13 | EM-3250 | Hurricane | Hurricane Katrina Evacuation |
| 2005-02-15 | DR-1580 | Severe Storm | Severe Winter Storms, Flooding, and Mudslides |
| 2004-09-19 | DR-1556 | Severe Storm | Severe Storms and Flooding |
| 2001-08-27 | DR-1390 | Severe Storm | Severe Storms and Flooding |
| 1997-03-04 | DR-1164 | Severe Storm | Severe Storms and Flooding |
| 1996-06-24 | DR-1122 | Flood | Flooding |
| 1996-01-27 | DR-1097 | Flood | Severe Storms and Flooding |
| 1990-06-06 | DR-870 | Severe Storm | Severe Storms, Tornadoes & Flooding |
| 1978-01-26 | EM-3055 | Snowstorm | Blizzards & Snowstorms |
| 1977-02-02 | EM-3029 | Snowstorm | Snowstorms |
| 1968-06-05 | DR-243 | Flood | Heavy Rains & Flooding |
| 1968-05-04 | DR-238 | Tornado | Tornadoes & Severe Storms |
Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.
How many floods has Clermont County had?
NOAA's Storm Events Database holds 155 flood or flash flood records for Clermont County from 1996 to 2026, on 105 days, with 2 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Clermont County ranks 440th of 2,942 U.S. counties.
The National Flood Insurance Program has paid $10.2 million on 623 claims filed in Clermont County; the most in one year was 321 in 1997. Claims count insured losses only: uninsured flood damage is not in this file.
The values, year by year
1978: 44 · 1979: 65 · 1980: 9 · 1981: 7 · 1982: 5 · 1983: 3 · 1984: 1 · 1986: 2 · 1989: 1 · 1990: 2 · 1991: 3 · 1994: 3 · 1996: 13 · 1997: 321 · 1998: 7 · 1999: 1 · 2001: 15 · 2002: 2 · 2003: 6 · 2004: 3 · 2005: 14 · 2006: 1 · 2007: 1 · 2008: 10 · 2009: 2 · 2010: 1 · 2011: 5 · 2012: 1 · 2013: 3 · 2015: 7 · 2016: 1 · 2017: 2 · 2018: 29 · 2019: 7 · 2020: 2 · 2021: 1 · 2022: 1 · 2025: 20 · 2026: 2; the other years: 0.
Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.
FEMA's modeled risk for Clermont County
FEMA's National Risk Index rates Clermont County Relatively Low overall, with an expected annual loss of $46.5 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.
| Hazard | Risk rating | Expected annual loss | Modeled frequency |
|---|---|---|---|
| Lightning | Relatively High | $1.4M | 50 a year (modeled) |
| Ice Storm | Relatively High | $958K | about once a year (modeled) |
| Strong Wind | Relatively High | $2.2M | 2.9 a year (modeled) |
| Heat Wave | Relatively Moderate | $2.8M | 6.3 modeled event-days a year |
| Tornado | Relatively Moderate | $5.9M | once in about 4 years (modeled) |
| Cold Wave | Relatively Moderate | $5.0M | 1.9 a year (modeled) |
| Winter Weather | Relatively Moderate | $275K | 11 a year (modeled) |
| Riverine Flooding | Relatively Moderate | $26M | 3.6 a year (modeled) |
Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.
Counties that share a border with Clermont County
Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.
Next
- Tornadoes in OhioEvery Ohio tornado since 1950 and the counties with the most per square mile
- Severe thunderstorm wind in OhioThe state's severe thunderstorm wind events, by county, year and month
- The Ohio recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Clermont CountyThe hazard risk calculator: 18 hazards beside the county's record
- Download Clermont County's FEMA declarations (CSV)19 rows: every declaration that named the county, for your own analysis