Tornadoes in Stephenson County
The Storm Prediction Center records 23 tornadoes whose paths touched Stephenson County, Illinois between 1958 and 2024. They killed 1 person and injured 40. The busiest month is June, with 7 tornadoes. The strongest was an F2 on 8 October 1958. The most recent was on 15 July 2024.
- 23tornadoes
- 1death
- 40injuries
- 408per 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 Stephenson County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 11 | 48% |
| F1 / EF1 | 8 | 35% |
| F2 / EF2 | 2 | 9% |
| F3 / EF3 | 0 | 0% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 2 | 9% |
Stephenson 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 | 2 |
| 1960s | 1 |
| 1970s | 1 |
| 1990s | 5 |
| 2000s | 4 |
| 2010s | 3 |
| 2020s | 7 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 2 |
| Apr | 2 |
| May | 3 |
| Jun | 7 |
| Jul | 4 |
| Aug | 4 |
| Sep | 0 |
| Oct | 1 |
| Nov | 0 |
| Dec | 0 |
Records for Stephenson County
- Deadliest and Strongest and Longest path: Illinois tornado8 October 1958, F2, 1 death, 81 miles long
- Most recent: Illinois tornado15 July 2024, Unknown rating, 1 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.