Tornadoes in Washington County
The Storm Prediction Center records 29 tornadoes whose paths touched Washington County, Iowa between 1959 and 2024. They killed 2 people and injured 52. The busiest month is May, with 12 tornadoes. The strongest was an EF4 on 31 March 2023. The most recent was on 24 May 2024.
- 29tornadoes
- 2deaths
- 52injuries
- 510per 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 Washington County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 5 | 17% |
| F1 / EF1 | 12 | 41% |
| F2 / EF2 | 8 | 28% |
| F3 / EF3 | 3 | 10% |
| F4 / EF4 | 1 | 3% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Washington County tornadoes over time
The 2020s only run to 2024, so that bar is for a shorter period. The record starts in 1950.
Show the numbers
| Period | Count |
|---|---|
| 1950s | 1 |
| 1960s | 2 |
| 1970s | 3 |
| 1980s | 7 |
| 1990s | 2 |
| 2000s | 6 |
| 2010s | 5 |
| 2020s | 3 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 1 |
| Feb | 0 |
| Mar | 1 |
| Apr | 8 |
| May | 12 |
| Jun | 5 |
| Jul | 1 |
| Aug | 0 |
| Sep | 0 |
| Oct | 0 |
| Nov | 1 |
| Dec | 0 |
Records for Washington County
- Deadliest: Iowa tornado27 April 2014, EF1, 2 deaths, 45.7 miles long
- Strongest: Harper, Iowa tornado31 March 2023, EF4, 3 injuries, 19.9 miles long
- Longest path: Iowa tornado3 April 1981, F0, 103.5 miles long
- Most recent: Iowa tornado24 May 2024, EF1, 22.5 miles long
Notable tornadoes in Washington County
- Harper, Iowa tornado31 March 2023, EF4, 3 injuries, 19.9 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.