Tornadoes in Cass County
The Storm Prediction Center records 21 tornadoes whose paths touched Cass County, Illinois between 1955 and 2025. They killed 1 person and injured 7. The busiest month is June, with 6 tornadoes. The strongest was an F2 on 10 June 1957. The most recent was on 18 June 2025.
- 21tornadoes
- 1death
- 7injuries
- 559per 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 Cass County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 5 | 24% |
| F1 / EF1 | 6 | 29% |
| F2 / EF2 | 5 | 24% |
| F3 / EF3 | 0 | 0% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 5 | 24% |
Cass 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 | 2 |
| 1960s | 1 |
| 1970s | 2 |
| 1980s | 1 |
| 1990s | 2 |
| 2000s | 1 |
| 2010s | 3 |
| 2020s | 9 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 1 |
| Mar | 0 |
| Apr | 3 |
| May | 2 |
| Jun | 6 |
| Jul | 4 |
| Aug | 1 |
| Sep | 0 |
| Oct | 0 |
| Nov | 0 |
| Dec | 4 |
Records for Cass County
- Deadliest: Illinois tornado8 April 1999, F1, 1 death, 6 injuries, 9.3 miles long
- Strongest and Longest path: Illinois tornado10 June 1957, F2, 42.3 miles long
- Most recent: Illinois tornado18 June 2025, Unknown rating, 3 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.