Tornadoes in Grant County
The Storm Prediction Center records 25 tornadoes whose paths touched Grant County, South Dakota between 1955 and 2023. None of them is recorded as having killed anyone. The busiest month is May, with 10 tornadoes. The strongest was an F3 on 17 May 1996. The most recent was on 6 May 2023.
- 25tornadoes
- 0deaths
- 0injuries
- 367per 10,000 sq mi of land
A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.
How strong were the tornadoes in Grant County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 11 | 44% |
| F1 / EF1 | 11 | 44% |
| F2 / EF2 | 2 | 8% |
| F3 / EF3 | 1 | 4% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Grant County tornadoes over time
The 2020s only run to 2023, so that bar is for a shorter period. The record starts in 1950.
Show the numbers
| Period | Count |
|---|---|
| 1950s | 1 |
| 1960s | 2 |
| 1970s | 5 |
| 1980s | 1 |
| 1990s | 8 |
| 2000s | 2 |
| 2010s | 1 |
| 2020s | 5 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 0 |
| May | 10 |
| Jun | 5 |
| Jul | 1 |
| Aug | 5 |
| Sep | 0 |
| Oct | 4 |
| Nov | 0 |
| Dec | 0 |
Records for Grant County
- Strongest: South Dakota tornado17 May 1996, F3, 18 miles long
- Longest path: South Dakota tornado3 August 1979, F2, 20.5 miles long
- Most recent: South Dakota tornado6 May 2023, EF0, 0.9 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.