Tornadoes in Winnebago County
The Storm Prediction Center records 27 tornadoes whose paths touched Winnebago County, Iowa between 1961 and 2025. None of them is recorded as having killed anyone. The busiest month is June, with 10 tornadoes. The strongest was an F2 on 7 June 1984. The most recent was on 17 August 2025.
- 27tornadoes
- 0deaths
- 8injuries
- 674per 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 Winnebago County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 8 | 30% |
| F1 / EF1 | 11 | 41% |
| F2 / EF2 | 7 | 26% |
| F3 / EF3 | 0 | 0% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 1 | 4% |
Winnebago 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 |
|---|---|
| 1960s | 4 |
| 1970s | 1 |
| 1980s | 7 |
| 1990s | 6 |
| 2000s | 1 |
| 2010s | 6 |
| 2020s | 2 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 3 |
| May | 4 |
| Jun | 10 |
| Jul | 3 |
| Aug | 5 |
| Sep | 1 |
| Oct | 0 |
| Nov | 0 |
| Dec | 1 |
Records for Winnebago County
- Strongest and Longest path: Iowa tornado7 June 1984, F2, 1 injury, 21 miles long
- Most recent: Iowa tornado17 August 2025, Unknown rating, 0.4 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.