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Tornado in Bennett County, South Dakota
31 tornadoes events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Tornado.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
Bennett County, South Dakota, has 31 tornado events in the NCEI record since 1950, with at least one in 17 different years.
July is the busiest month, with 14 of the recorded events. The last 20 years account for 9 events against 9 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.6% of the 1,947 tornado events recorded in South Dakota; its 2.6 per 100 square miles compares with 2.6 statewide.
By rating: 17 at (E)F0, 4 at (E)F1, 3 at (E)F2, 1 at (E)F3, 0 at (E)F4, 0 at (E)F5 and 6 unrated. Tornadoes before 2007 carry the original Fujita rating.
Compared with South Dakota
| Measure | Bennett County | South Dakota | US |
|---|---|---|---|
| Tornado events since 1950 | 31 | 1,947 | 81,281 |
| Per 100 square miles | 2.6 | 2.6 | 2.3 |
| Per 10,000 residents | 91.0 | 21.7 | 2.4 |
| Deaths recorded | 0 | 19 | 6,410 |
| Busiest month | July | June | May |
By year
Seasonality
0Feb
0Mar
1Apr
2May
3Jun
9Jul
14Aug
2Sep
0Oct
0Nov
0Dec
0
Magnitude distribution
Enhanced Fujita scale wind estimates
- EF0/F0
- 65–85 mph (EF0)
- EF1/F1
- 86–110 mph (EF1)
- EF2/F2
- 111–135 mph (EF2)
- EF3/F3
- 136–165 mph (EF3)
- EF4/F4
- 166–200 mph (EF4)
- EF5/F5
- over 200 mph (EF5)
- Unrated
- no rating recorded
Tornado rating as recorded (Fujita scale before February 2007, Enhanced Fujita after).
Recorded events
All 31 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 10 Jul 2020 | Tornado | EF0 | — | — | — | — | County |
| 17 Jul 2019 | Tornado | EF unrated | — | — | — | — | County |
| 3 Jul 2019 | Tornado | EF0 | — | — | — | — | County |
| 3 Jul 2019 | Tornado | EF0 | — | — | — | — | County |
| 3 Jul 2019 | Tornado | EF0 | — | — | — | — | County |
| 29 Jun 2019 | Tornado | EF1 | — | — | — | — | County |
| 12 Jun 2017 | Tornado | EF0 | — | — | — | — | County |
| 28 May 2013 | Tornado | EF1 | $100K | — | — | 1 | County |
| 6 Jun 2007 | Tornado | EF0 | — | — | — | — | County |
| 6 Aug 2004 | Tornado | F0 | — | — | — | — | County |
| 3 Jul 2003 | Tornado | F2 | $75K | — | — | — | County |
| 25 Jul 2001 | Tornado | F0 | — | — | — | — | County |
| 5 Jun 1999 | Tornado | F0 | — | — | — | — | County |
| 5 Jun 1999 | Tornado | F0 | — | — | — | — | County |
| 5 Jun 1999 | Tornado | F0 | — | — | — | — | County |
| 4 Jun 1999 | Tornado | F0 | — | — | — | — | County |
| 18 Jul 1994 | Tornado | F0 | — | — | — | — | County |
| 18 Jul 1994 | Tornado | F0 | — | — | — | — | County |
| 26 Apr 1984 | Tornado | F1 | $250K | — | — | — | County |
| 23 Aug 1982 | Tornado | F0 | $30 | — | — | — | County |
| 19 May 1982 | Tornado | F0 | $30 | — | — | — | County |
| 29 Mar 1982 | Tornado | F2 | $250K | — | — | 1 | County |
| 2 Jul 1978 | Tornado | — | — | — | — | — | County |
| 10 Jul 1977 | Tornado | — | — | — | — | — | County |
| 10 Jul 1977 | Tornado | — | — | — | — | — | County |
| 10 Jul 1977 | Tornado | — | — | — | — | — | County |
| 10 Jul 1977 | Tornado | F2 | — | — | — | — | County |
| 16 May 1977 | Tornado | — | $25K | — | — | — | County |
| 26 Apr 1966 | Tornado | F1 | $3K | — | — | — | County |
| 6 Jun 1963 | Tornado | F3 | $250K | — | — | — | County |
| 9 Jun 1957 | Tornado | F0 | $30 | — | — | — | County |
Questions and answers
How many tornado events has Bennett County had?
31 events in the NCEI Storm Events record between 1950 and 2026. Reporting of tornadoes became far more complete after 1996, so early decades undercount.
When was the last recorded tornado event in Bennett County?
10 Jul 2020 (Tornado, EF0). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Bennett County?
The tornado of 6 Jun 1963, with property damage estimated by NCEI at $250K.
How does Bennett County compare with South Dakota for tornado?
2.6 events per 100 square miles against 2.6 statewide; the county holds 31 of the state's 1,947 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Tornado hub and the county page.