Harrison, OH tornado history
10 tornadoes have passed within 10 miles of the center of Harrison, OH from 1950 through 2025, according to the NOAA Storm Prediction Center, ranking 277th of 360 Ohio cities with a tornado on record. 4 were rated F3/EF3 or stronger by the National Weather Service. The most recent was on April 2, 2025 (EF0, 11.0-mile path); the strongest, on April 3, 1974, was rated F5. The deadliest, on April 3, 1974, killed 3 along its path. SPC also logged 1 preliminary tornado report within 10 miles of the center of Harrison, OH in 2026.
Dashed circle: 10 miles from the city's Census center point. A tornado counts when its recorded path passes inside the circle. Paths run straight from start to end point, as SPC records them.
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Every tornado within 10 miles of the center of Harrison, OH
| Date | Rating | Path length | Deaths / injuries | Started in | Closest to center |
|---|---|---|---|---|---|
| Jun 17, 2026 | Prelim. report | – | – | Franklin County, IN | 7.6 mi |
| Apr 2, 2025 | EF0 | 11.0 mi | 0 / 0 | Franklin County, IN → OH | 9.3 mi |
| Oct 26, 2010 | EF0 | 0.1 mi | 0 / 0 | Dearborn County, IN | 8.3 mi |
| Apr 8, 1999 | F1 | 0.8 mi | 0 / 0 | Hamilton County, OH → KY | 9.2 mi |
| Jun 2, 1990 | F4 | 33.0 mi | 0 / 37 | Dearborn County, IN → OH | 0.5 mi |
| Sep 30, 1977 | F1 | 0.5 mi | 0 / 0 | Hamilton County, OH | 9.1 mi |
| Sep 30, 1977 | F3 | 0.7 mi | 0 / 17 | Hamilton County, OH | 6.2 mi |
| Apr 3, 1974 | F5 | 20.8 mi | 3 / 210 | Ohio County, IN → KY → OH | 8.2 mi |
| May 19, 1973 | F1 | 1.0 mi | 0 / 0 | Butler County, OH | 6.2 mi |
| May 10, 1969 | F3 | 54.5 mi | 0 / 25 | Butler County, OH | 5.1 mi |
| Feb 24, 1956 | F2 | 0.5 mi | 0 / 0 | Hamilton County, OH | 2.0 mi |
More: Hamilton County tornadoes · Ohio tornado history · Harrison hail history · Ohio damaging wind
Source: NOAA Storm Prediction Center (SPC) Severe Weather Database (SVRGIS) tornado file, 1950–2025, and SPC preliminary storm reports for 2026 (data through November 6, 2026). Ratings are the ones the National Weather Service assigned: Fujita (F) scale before Feb 1, 2007, Enhanced Fujita (EF) after. Paths are drawn as straight lines from the start to the end point SPC records; real paths curve. City and county boundaries: US Census Bureau.
NWS Damage Survey Paths Near Harrison
The National Weather Service mapped the path of 3 tornadoes within 10 miles of Harrison in damage surveys (1 EF2, 1 EF1, 1 EF0). On the map, those paths follow the survey, colored by the EF rating of each stretch, instead of a straight line from start to end.
| Date | Rating | Peak wind | Path length | Max width | Deaths / injuries | On the ground | Surveyed by |
|---|---|---|---|---|---|---|---|
| Aug 11, 2026 | EF1 | 90 mph | 11.3 mi | 500 yd | 0 / 0 | 19:13–19:25 UTC | NWS Wilmington, OH |
| Jun 17, 2026 | EF2 | 125 mph | 7.6 mi | 400 yd | 0 / 0 | 05:22–05:33 UTC | NWS Wilmington, OH |
| Apr 2, 2025 | EF0 | 85 mph | 11.0 mi | 300 yd | 0 / 0 | 04:23–04:33 UTC | NWS Wilmington, OH |
Source: NOAA National Weather Service Damage Assessment Toolkit (DAT): the tornado paths and EF-rating zones NWS survey teams mapped after each storm. Survey data are preliminary and can be revised; NOAA's official record is Storm Data (NCEI). Paths are simplified to about 30 m. Times are when the tornado was on the ground, in UTC.