Tornadoes · United States · Kentucky
Tornadoes in Boone County, Kentucky
19 tornadoes have crossed Boone County since 1950, 3 of them surveyed so far this year and still preliminary, 26th of the 120 counties in Kentucky with a tornado on record, an average of one every 4.0 years. They have killed 4 people and injured 242. 2 were rated F4 or EF4 and above, 1 at the top of the scale.
The rating scale
Tracks are drawn in the color of the rating. The United States rated tornadoes on Ted Fujita’s F scale until 31 January 2007 and on the Enhanced Fujita scale after it. Both run from 0 to 5, and both rate the damage rather than measure the wind: the speeds are what that damage is taken to imply.
F0 / EF040 to 72 mph on the F scale, 65 to 85 mph on the EF scale
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F1 / EF173 to 112 mph on the F scale, 86 to 110 mph on the EF scale
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
F2 / EF2113 to 157 mph on the F scale, 111 to 135 mph on the EF scale
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
F3 / EF3158 to 206 mph on the F scale, 136 to 165 mph on the EF scale
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
F4 / EF4207 to 260 mph on the F scale, 166 to 200 mph on the EF scale
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
F5 / EF5261 to 318 mph on the F scale, over 200 mph on the EF scale
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.
Now
- Tornadoes
- 19
- Deaths
- 4
- Injuries
- 242
- F4 and above
- 2
- Worst on record
- F5, April 3, 1974
The deadliest in Boone County
The strongest
- F5 Sayler Park tornado, OhioApril 3, 1974
- F4, Carroll, Switzerland and Boone counties, Kentucky and IndianaNovember 22, 1992
- EF2, Dearborn and Boone counties, Indiana and KentuckyJune 17, 2026
- F2, Boone County, KentuckyApril 8, 1980
- F2, Boone County, KentuckyJuly 13, 1956
- F2, Boone County, KentuckySeptember 29, 1973
Every year with a tornado
The 15 years of the 76 in the record with a tornado in Boone County. Each year links to every tornado in Kentucky that year.
Every tornado that crossed Boone County
19 tornadoes, newest first. 3 of them touched down in a neighboring state and ran in, so the record files them under that state rather than Kentucky. The 3 at the top are this year's, from the surveying office rather than SPC's published database, and their ratings are marked as preliminary.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| June 17, 2026 | 12:14 AM EDT | EF2 | Dearborn to KY | 8.9 | 450 | 1 | ||
| June 17, 2026 | 12:34 AM EDT | EF1 | Boone | 6.2 | 400 | |||
| August 11, 2026 | 3:51 PM EDT | EF0 | Boone | 2.9 | 150 | |||
| March 19, 2025 | 10:54 PM EDT | EF1 | Boone | 3.1 | 90 | $250,000 | ||
| June 18, 2021 | 9:09 PM EDT | EF1 | Boone | 2.8 | 175 | $50,000 | ||
| November 22, 1992 | 2:52 PM CST | F4 | Carroll to IN | 26.7 | 60 | 1 | 10 | $500,000 to $5 million |
| June 18, 1992 | 3:25 PM CDT | F0 | Dearborn to KY | 2.0 | 167 | |||
| April 9, 1991 | 2:45 PM EDT | F1 | Kenton | 3.0 | 100 | $50,000 to $500,000 | ||
| June 2, 1990 | 12:40 AM EDT | F1 | Boone | 0.7 | 150 | $50,000 to $500,000 | ||
| July 26, 1984 | 4:30 PM EDT | F0 | Kenton | 8.0 | 27 | $5,000 to $50,000 | ||
| April 8, 1980 | 2:45 PM EST | F2 | Boone | 1.5 | 100 | 4 | $5,000 to $50,000 | |
| April 2, 1977 | 5:10 PM EST | F1 | Boone | 11.6 | 3,000 | $50,000 to $500,000 | ||
| June 24, 1976 | 7:30 PM EDT | F1 | Boone | 0.1 | 10 | 1 | $500 to $5,000 | |
| April 3, 1974 | 4:20 PM CDT | F5 | Sayler Park tornado | 20.8 | 533 | 3 | 210 | |
| September 29, 1973 | 1:45 PM EDT | F2 | Boone | 0.5 | 10 | $50,000 to $500,000 | ||
| February 15, 1967 | 9:30 PM GMT-5 | F1 | Boone | 0.1 | 50 | $5,000 to $50,000 | ||
| February 15, 1967 | 8:03 PM GMT-5 | F1 | Boone | 0.1 | 50 | $5,000 to $50,000 | ||
| March 19, 1963 | 5:00 PM GMT-5 | F1 | Boone | 0.1 | 10 | 4 | $5,000 to $50,000 | |
| July 13, 1956 | 4:30 PM GMT-4 | F2 | Boone | 1.0 | 433 | 12 | $500,000 to $5 million |
Nearby
Warnings in force in Boone CountyThe forecast for Boone CountyThe live radar over Boone CountyEvery county in Kentucky
What this means
Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.