Tornadoes in Decatur County
The Storm Prediction Center records 21 tornadoes whose paths touched Decatur County, Iowa between 1957 and 2022. They killed 3 people and injured 66. The busiest month is May, with 5 tornadoes. The strongest was an F4 on 7 June 1984. The most recent was on 5 March 2022.
- 21tornadoes
- 3deaths
- 66injuries
- 395per 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 Decatur County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 7 | 33% |
| F1 / EF1 | 4 | 19% |
| F2 / EF2 | 5 | 24% |
| F3 / EF3 | 1 | 5% |
| F4 / EF4 | 3 | 14% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 1 | 5% |
Decatur County tornadoes over time
The 2020s only run to 2022, so that bar is for a shorter period. The record starts in 1950.
Show the numbers
| Period | Count |
|---|---|
| 1950s | 3 |
| 1960s | 3 |
| 1970s | 2 |
| 1980s | 7 |
| 1990s | 2 |
| 2000s | 1 |
| 2010s | 1 |
| 2020s | 2 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 2 |
| Apr | 3 |
| May | 5 |
| Jun | 5 |
| Jul | 4 |
| Aug | 1 |
| Sep | 0 |
| Oct | 0 |
| Nov | 1 |
| Dec | 0 |
Records for Decatur County
- Deadliest and Strongest and Longest path: Eagleville, Missouri tornado7 June 1984, F4, 3 deaths, 64 injuries, 134 miles long
- Most recent: Iowa tornado5 March 2022, Unknown rating, 2.1 miles long
Notable tornadoes in Decatur County
- Eagleville, Missouri tornado7 June 1984, F4, 3 deaths, 64 injuries, 134 miles long
- Corning, Iowa tornado24 May 1989, F4, 49 miles long
- Lamoni, Iowa tornado2 June 1980, F4, 31.2 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.