Tornadoes in Jefferson County
The Storm Prediction Center records 18 tornadoes whose paths touched Jefferson County, Iowa between 1959 and 2017. They killed 2 people and injured 20. The busiest month is April, with 8 tornadoes. The strongest was an F3 on 16 April 1967. The most recent was on 17 May 2017.
- 18tornadoes
- 2deaths
- 20injuries
- 413per 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 Jefferson County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 6 | 33% |
| F1 / EF1 | 4 | 22% |
| F2 / EF2 | 5 | 28% |
| F3 / EF3 | 3 | 17% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Jefferson County tornadoes over time
The 2010s only run to 2017, so that bar is for a shorter period. The record starts in 1950.
Show the numbers
| Period | Count |
|---|---|
| 1950s | 1 |
| 1960s | 4 |
| 1970s | 1 |
| 1980s | 4 |
| 1990s | 4 |
| 2000s | 3 |
| 2010s | 1 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 8 |
| May | 6 |
| Jun | 1 |
| Jul | 0 |
| Aug | 1 |
| Sep | 1 |
| Oct | 0 |
| Nov | 1 |
| Dec | 0 |
Records for Jefferson County
- Deadliest and Strongest: Milton, Iowa tornado16 April 1967, F3, 2 deaths, 16 injuries, 19.4 miles long
- Longest path: Iowa tornado8 May 1988, F2, 71 miles long
- Most recent: Iowa tornado17 May 2017, EF1, 3.2 miles long
Notable tornadoes in Jefferson County
- Milton, Iowa tornado16 April 1967, F3, 2 deaths, 16 injuries, 19.4 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.