Tornadoes · United States · South Dakota
Tornadoes in Bon Homme County, South Dakota
26 tornadoes have crossed Bon Homme County since 1950, 37th of the 66 counties in South Dakota with a tornado on record, an average of one every 2.9 years. They have killed 0 people and injured 4. None was rated F4 or above.
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
- 26
- Deaths
- 0
- Injuries
- 4
- F4 and above
- 0
- Worst on record
- F3, June 26, 1965
The strongest
- F3, Bon Homme and Hutchinson counties, South DakotaJune 26, 1965
- F3, Bon Homme County, South DakotaJune 21, 1965
- F3, Bon Homme County, South DakotaJune 18, 1954
- F3, Bon Homme County, South DakotaJune 5, 1962
- F2, Bon Homme County, South DakotaMay 10, 1956
- EF2, Bon Homme County, South DakotaMay 5, 2007
- EF2, Bon Homme County, South DakotaMay 5, 2007
- F2, Bon Homme County, South DakotaApril 20, 1985
Every year with a tornado
The 20 years of the 76 in the record with a tornado in Bon Homme County. Each year links to every tornado in South Dakota that year.
Every tornado that crossed Bon Homme County
26 tornadoes, newest first.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| July 3, 2023 | 4:04 PM CDT | EF0 | Bon Homme | 1.2 | 40 | |||
| May 30, 2022 | 12:29 PM CDT | Unrated | Bon Homme | 5.5 | 50 | |||
| September 10, 2019 | 8:13 PM CDT | EF0 | Bon Homme | 1.4 | 20 | $6,000 | ||
| April 15, 2012 | 2:40 PM CDT | EF0 | Bon Homme | 0.5 | 25 | |||
| March 23, 2009 | 4:14 PM CDT | EF1 | Bon Homme | 0.9 | 100 | $30,000 | ||
| May 29, 2008 | 6:13 PM CDT | EF0 | Bon Homme | 0.1 | 50 | |||
| May 5, 2007 | 4:43 PM CDT | EF2 | Bon Homme | 4.0 | 100 | $100,000 | ||
| May 5, 2007 | 4:33 PM CDT | EF2 | Bon Homme | 3.5 | 100 | $50,000 | ||
| May 3, 1999 | 10:00 PM CDT | F0 | Bon Homme | 0.1 | 50 | |||
| April 20, 1985 | 6:25 PM CST | F0 | Bon Homme | 0.1 | 10 | |||
| April 20, 1985 | 6:01 PM CST | F1 | Bon Homme | 0.1 | 10 | $5,000 to $50,000 | ||
| April 20, 1985 | 6:00 PM CST | F2 | Bon Homme | 3.5 | 1,000 | $50,000 to $500,000 | ||
| June 22, 1984 | 8:00 PM CDT | F0 | Bon Homme | 0.1 | 10 | |||
| July 19, 1981 | 6:30 PM CDT | F1 | Bon Homme | 7.5 | 10 | 2 | ||
| July 4, 1978 | 11:25 PM CDT | F0 | Bon Homme | 0.1 | 10 | |||
| June 25, 1978 | 9:30 PM CDT | F0 | Bon Homme | 0.1 | 10 | |||
| May 6, 1975 | 3:10 PM CDT | F0 | Bon Homme | 0.1 | 10 | $50 to $500 | ||
| May 6, 1975 | 2:46 PM CDT | F1 | Bon Homme | 0.1 | 10 | $50 to $500 | ||
| June 13, 1972 | 2:15 PM CDT | F0 | Bon Homme | 0.1 | 10 | |||
| June 15, 1970 | 10:30 PM CDT | F1 | Bon Homme | 0.1 | 10 | |||
| June 26, 1965 | 12:15 AM GMT-5 | F3 | Bon Homme | 35.6 | 163 | $50,000 to $500,000 | ||
| June 21, 1965 | 12:00 AM GMT-5 | F3 | Bon Homme | 15.4 | 87 | $5,000 to $50,000 | ||
| June 5, 1962 | 2:15 AM GMT-5 | F3 | Bon Homme | 9.5 | 1,760 | $50,000 to $500,000 | ||
| May 14, 1961 | 1:45 PM GMT-5 | F1 | Bon Homme | 0.3 | 60 | $500 to $5,000 | ||
| May 10, 1956 | 4:30 PM GMT-5 | F2 | Bon Homme | 5.6 | 100 | 2 | $50 to $500 | |
| June 18, 1954 | 4:55 AM GMT-5 | F3 | Bon Homme | 10.6 | 10 | $5,000 to $50,000 |
Nearby
Warnings in force in Bon Homme CountyThe forecast for Bon Homme CountyThe live radar over Bon Homme CountyEvery county in South Dakota
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.