Tornadoes in Calhoun County
The Storm Prediction Center records 45 tornadoes whose paths touched Calhoun County, Iowa between 1953 and 2024. They killed 4 people and injured 26. The busiest month is May, with 17 tornadoes. The strongest was an F4 on 28 June 1979. The most recent was on 16 April 2024.
- 45tornadoes
- 4deaths
- 26injuries
- 790per 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 Calhoun County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 19 | 42% |
| F1 / EF1 | 10 | 22% |
| F2 / EF2 | 6 | 13% |
| F3 / EF3 | 2 | 4% |
| F4 / EF4 | 4 | 9% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 4 | 9% |
Calhoun 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 | 3 |
| 1960s | 3 |
| 1970s | 4 |
| 1980s | 6 |
| 1990s | 8 |
| 2000s | 9 |
| 2010s | 3 |
| 2020s | 9 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 5 |
| May | 17 |
| Jun | 11 |
| Jul | 4 |
| Aug | 4 |
| Sep | 1 |
| Oct | 0 |
| Nov | 0 |
| Dec | 3 |
Records for Calhoun County
- Deadliest and Strongest: Palmer, Iowa tornado28 June 1979, F4, 3 deaths, 26 injuries, 14.9 miles long
- Longest path: Carroll, Iowa tornado27 May 1995, F4, 36 miles long
- Most recent: Iowa tornado16 April 2024, Unknown rating, 0.6 miles long
Notable tornadoes in Calhoun County
- Palmer, Iowa tornado28 June 1979, F4, 3 deaths, 26 injuries, 14.9 miles long
- Lake City, Iowa tornado9 June 1954, F4, 1 death, 9.9 miles long
- Carroll, Iowa tornado27 May 1995, F4, 36 miles long
- Rinard, Iowa tornado5 May 1965, F4, 9.9 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.