Tornadoes in Union County
The Storm Prediction Center records 28 tornadoes whose paths touched Union County, Illinois between 1955 and 2025. They killed 1 person and injured 25. The busiest month is April, with 8 tornadoes. The strongest was an F3 on 28 April 2002. The most recent was on 20 May 2025.
- 28tornadoes
- 1death
- 25injuries
- 677per 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 Union County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 9 | 32% |
| F1 / EF1 | 11 | 39% |
| F2 / EF2 | 6 | 21% |
| F3 / EF3 | 2 | 7% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Union 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 | 1 |
| 1970s | 4 |
| 1990s | 3 |
| 2000s | 4 |
| 2010s | 8 |
| 2020s | 5 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 5 |
| Feb | 2 |
| Mar | 2 |
| Apr | 8 |
| May | 7 |
| Jun | 1 |
| Jul | 0 |
| Aug | 1 |
| Sep | 0 |
| Oct | 1 |
| Nov | 1 |
| Dec | 0 |
Records for Union County
- Deadliest and Strongest: Mill Creek, Illinois tornado28 April 2002, F3, 1 death, 10 injuries, 19.3 miles long
- Longest path: Illinois tornado18 January 1973, F1, 95.9 miles long
- Most recent: Illinois tornado20 May 2025, EF1, 1.8 miles long
Notable tornadoes in Union County
- Mill Creek, Illinois tornado28 April 2002, F3, 1 death, 10 injuries, 19.3 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.