Tornadoes in Grand Forks County
The Storm Prediction Center records 100 tornadoes whose paths touched Grand Forks County, North Dakota between 1952 and 2025. They killed 1 person and injured 21. The busiest month is June, with 45 tornadoes. The strongest was an EF4 on 26 August 2007. The most recent was on 8 August 2025.
- 100tornadoes
- 1death
- 21injuries
- 696per 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 Grand Forks County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 58 | 58% |
| F1 / EF1 | 29 | 29% |
| F2 / EF2 | 9 | 9% |
| F3 / EF3 | 2 | 2% |
| F4 / EF4 | 2 | 2% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Grand Forks 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 | 6 |
| 1960s | 1 |
| 1970s | 4 |
| 1980s | 6 |
| 1990s | 4 |
| 2000s | 29 |
| 2010s | 34 |
| 2020s | 16 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 0 |
| May | 11 |
| Jun | 45 |
| Jul | 22 |
| Aug | 22 |
| Sep | 0 |
| Oct | 0 |
| Nov | 0 |
| Dec | 0 |
Records for Grand Forks County
- Deadliest and Strongest: Northwood, North Dakota tornado26 August 2007, EF4, 1 death, 18 injuries, 5 miles long
- Longest path: Mayville, North Dakota tornado17 June 2010, EF4, 1 injury, 17 miles long
- Most recent: North Dakota tornado8 August 2025, EF1, 5.7 miles long
Notable tornadoes in Grand Forks County
- Northwood, North Dakota tornado26 August 2007, EF4, 1 death, 18 injuries, 5 miles long
- Mayville, North Dakota tornado17 June 2010, EF4, 1 injury, 17 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.