Tornadoes in Gregory County
The Storm Prediction Center records 35 tornadoes whose paths touched Gregory County, South Dakota between 1952 and 2025. None of them is recorded as having killed anyone. The busiest month is May, with 13 tornadoes. The strongest was an F4 on 29 May 1962. The most recent was on 28 July 2025.
- 35tornadoes
- 0deaths
- 19injuries
- 345per 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 Gregory County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 16 | 46% |
| F1 / EF1 | 5 | 14% |
| F2 / EF2 | 8 | 23% |
| F3 / EF3 | 5 | 14% |
| F4 / EF4 | 1 | 3% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Gregory County tornadoes over time
The 2020s only run to 2025, so that bar is for a shorter period. The record starts in 1950.
Show the numbers
| Period | Count |
|---|---|
| 1950s | 3 |
| 1960s | 13 |
| 1970s | 1 |
| 1980s | 3 |
| 1990s | 3 |
| 2000s | 5 |
| 2010s | 4 |
| 2020s | 3 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 0 |
| May | 13 |
| Jun | 12 |
| Jul | 5 |
| Aug | 3 |
| Sep | 1 |
| Oct | 1 |
| Nov | 0 |
| Dec | 0 |
Records for Gregory County
- Strongest: Lynch, Nebraska tornado29 May 1962, F4, 24.2 miles long
- Longest path: Nebraska tornado14 May 1962, F3, 8 injuries, 53.8 miles long
- Most recent: South Dakota tornado28 July 2025, EF2, 7.4 miles long
Notable tornadoes in Gregory County
- Lynch, Nebraska tornado29 May 1962, F4, 24.2 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.