Tornadoes in Delaware County
The Storm Prediction Center records 75 tornadoes whose paths touched Delaware County, Oklahoma between 1951 and 2025. None of them is recorded as having killed anyone. The busiest month is May, with 39 tornadoes. The strongest was an F3 on 12 March 2006. The most recent was on 17 June 2025.
- 75tornadoes
- 0deaths
- 63injuries
- 1,017per 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 Delaware County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 11 | 15% |
| F1 / EF1 | 36 | 48% |
| F2 / EF2 | 18 | 24% |
| F3 / EF3 | 9 | 12% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 1 | 1% |
Delaware 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 | 7 |
| 1960s | 3 |
| 1970s | 7 |
| 1980s | 7 |
| 1990s | 8 |
| 2000s | 4 |
| 2010s | 28 |
| 2020s | 11 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 5 |
| Apr | 15 |
| May | 39 |
| Jun | 4 |
| Jul | 2 |
| Aug | 1 |
| Sep | 1 |
| Oct | 6 |
| Nov | 1 |
| Dec | 1 |
Records for Delaware County
- Strongest: Oklahoma tornado12 March 2006, F3, 8 injuries, 29 miles long
- Longest path: Oklahoma tornado30 November 2018, EF2, 5 injuries, 47 miles long
- Most recent: Oklahoma tornado17 June 2025, EF1, 3.7 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.