United States Counties with most tornadoes per area
Tornadoes from 1950-2004. Data from SPC tornado database and Storm Data, modified where
appropriate. It is possible that there may have been a transcription error during my
calculations, so this is not intended to be an official list. This list excludes small
Virginia independent cities where the small area makes this calculation more difficult to
interpret.
| Rank | County | Tornadoes | County Land Area (square miles) | Tornadoes/ square mile
|
|---|
| 1 | Pinellas County, FL | 117 | 280 | 0.418
|
| 2 | Galveston County, TX | 100 | 399 | 0.251
|
| 3 | Lee County, FL | 106 | 803 | 0.132
|
| 4 | Hall County, NE | 70 | 537 | 0.130
|
| 5 | Oklahoma County, OK | 90 | 708 | 0.127
|
| 6 | Sarasota County, FL | 72 | 573 | 0.126
|
| 7 | Escambia County, FL | 81 | 660 | 0.123
|
| 8 | Lafayette Parish, LA | 33 | 270 | 0.122
|
| 9 | Hillsborough County, FL | 127 | 1053 | 0.121
|
| 10 | Tulsa County, OK | 68 | 572 | 0.119
|
| 11 | Harris County, TX | 205 | 1734 | 0.118
|
| 12 | Denver County, CO | 13 | 111 | 0.117
|
| 13 | Adams County, CO | 144 | 1235 | 0.117
|
| 14 | Union County, NJ | 12 | 103 | 0.117
|
| 15 | Hale County, TX | 117 | 1005 | 0.116
|
| 16 | Cleveland County, OK | 57 | 529 | 0.108
|
| 17 | Nueces County, TX | 91 | 847 | 0.108
|
| 18 | Gregg County, TX | 29 | 273 | 0.106
|
| 19 | Jefferson County, TX | 99 | 937 | 0.106
|
| 20 | Brevard County, FL | 105 | 995 | 0.106
|