Tornadoes in Mercer County
The Storm Prediction Center records 25 tornadoes whose paths touched Mercer County, Pennsylvania between 1954 and 2024. They killed 35 people and injured 466. The busiest month is May, with 6 tornadoes. The strongest was an F5 on 31 May 1985. The most recent was on 6 August 2024.
- 25tornadoes
- 35deaths
- 466injuries
- 372per 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 Mercer County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 9 | 36% |
| F1 / EF1 | 7 | 28% |
| F2 / EF2 | 5 | 20% |
| F3 / EF3 | 1 | 4% |
| F4 / EF4 | 1 | 4% |
| F5 / EF5 | 1 | 4% |
| Unknown rating | 1 | 4% |
Mercer 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 | 4 |
| 1980s | 4 |
| 1990s | 1 |
| 2000s | 5 |
| 2010s | 6 |
| 2020s | 2 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 1 |
| Feb | 0 |
| Mar | 0 |
| Apr | 2 |
| May | 6 |
| Jun | 5 |
| Jul | 2 |
| Aug | 3 |
| Sep | 4 |
| Oct | 1 |
| Nov | 1 |
| Dec | 0 |
Records for Mercer County
- Deadliest and Strongest: Warren, Ohio tornado31 May 1985, F5, 18 deaths, 310 injuries, 47 miles long
- Longest path: Andover, Ohio tornado31 May 1985, F4, 16 deaths, 125 injuries, 56.2 miles long
- Most recent: Pennsylvania tornado6 August 2024, Unknown rating, 0 miles long
Notable tornadoes in Mercer County
- Warren, Ohio tornado31 May 1985, F5, 18 deaths, 310 injuries, 47 miles long
- Andover, Ohio tornado31 May 1985, F4, 16 deaths, 125 injuries, 56.2 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.