Tornadoes in Contra Costa County
The Storm Prediction Center records 5 tornadoes whose paths touched Contra Costa County, California between 1989 and 2010. None of them is recorded as having killed anyone. The busiest month is September, with 2 tornadoes. The strongest was an EF1 on 23 January 2010. The most recent was on 23 January 2010.
- 5tornadoes
- 0deaths
- 0injuries
- 70per 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 Contra Costa County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 4 | 80% |
| F1 / EF1 | 1 | 20% |
| F2 / EF2 | 0 | 0% |
| F3 / EF3 | 0 | 0% |
| F4 / EF4 | 0 | 0% |
| F5 / EF5 | 0 | 0% |
| Unknown rating | 0 | 0% |
Contra Costa County tornadoes over time
The 2010s only run to 2010, so that bar is for a shorter period. The record starts in 1950.
Show the numbers
| Period | Count |
|---|---|
| 1980s | 2 |
| 1990s | 2 |
| 2010s | 1 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 1 |
| Feb | 1 |
| Mar | 0 |
| Apr | 0 |
| May | 0 |
| Jun | 0 |
| Jul | 0 |
| Aug | 0 |
| Sep | 2 |
| Oct | 0 |
| Nov | 0 |
| Dec | 1 |
Records for Contra Costa County
- Strongest and Longest path and Most recent: California tornado23 January 2010, EF1, 1.6 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.