Strong Tornadoes per Decade by County
Tornadoes of (E)F2 or stronger per decade, per 1,000 square miles, 1950 to 2023. Strong tornadoes were always noticed, so this is the fairer measure of tornado risk over time.
See Strong Tornadoes per Decade on the interactive map →
Highest counties
| County | Strong Tornadoes per Decade |
|---|---|
| Cleveland County, Oklahoma | 8.5 |
| Pinellas County, Florida | 8.4 |
| Oklahoma County, Oklahoma | 8.4 |
| Orleans Parish, Louisiana | 8.0 |
| Tulsa County, Oklahoma | 7.1 |
| Marshall County, Alabama | 6.9 |
| Gregg County, Texas | 6.9 |
| Faulkner County, Arkansas | 6.7 |
| Hancock County, Indiana | 6.6 |
| Pottawatomie County, Oklahoma | 6.3 |
| Cullman County, Alabama | 6.2 |
| Jones County, Mississippi | 6.2 |
Lowest counties
| County | Strong Tornadoes per Decade |
|---|---|
| Utuado Municipio, Puerto Rico | 0.0 |
| Ponce Municipio, Puerto Rico | 0.0 |
| Arecibo Municipio, Puerto Rico | 0.0 |
| Sweetwater County, Wyoming | 0.0 |
| Sublette County, Wyoming | 0.0 |
| Sheridan County, Wyoming | 0.0 |
| Lincoln County, Wyoming | 0.0 |
| Wyoming County, West Virginia | 0.0 |
| Wirt County, West Virginia | 0.0 |
| Wetzel County, West Virginia | 0.0 |
| Webster County, West Virginia | 0.0 |
| Wayne County, West Virginia | 0.0 |