Tornadoes in Mason County
The Storm Prediction Center records 42 tornadoes whose paths touched Mason County, Illinois between 1951 and 2025. They killed 1 person and injured 60. The busiest month is April, with 9 tornadoes. The strongest was an F3 on 24 January 1967. The most recent was on 20 September 2025.
- 42tornadoes
- 1death
- 60injuries
- 779per 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 Mason County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 17 | 40% |
| F1 / EF1 | 15 | 36% |
| F2 / EF2 | 7 | 17% |
| F3 / EF3 | 3 | 7% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Mason 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 |
|---|---|
| 1950s | 3 |
| 1960s | 5 |
| 1970s | 6 |
| 1980s | 3 |
| 1990s | 9 |
| 2000s | 6 |
| 2010s | 5 |
| 2020s | 5 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 2 |
| Feb | 0 |
| Mar | 4 |
| Apr | 9 |
| May | 6 |
| Jun | 6 |
| Jul | 2 |
| Aug | 3 |
| Sep | 2 |
| Oct | 0 |
| Nov | 4 |
| Dec | 4 |
Records for Mason County
- Deadliest and Strongest: Chandlerville, Illinois tornado24 January 1967, F3, 1 death, 3 injuries, 5.1 miles long
- Longest path: Illinois tornado13 November 1951, F2, 47.4 miles long
- Most recent: Illinois tornado20 September 2025, EF0, 2.4 miles long
Notable tornadoes in Mason County
- Chandlerville, Illinois tornado24 January 1967, F3, 1 death, 3 injuries, 5.1 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.