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Tornado Alley States 2021

Tornado Alley is commonly used for the corridor-shaped region in the United States Midwest that sees the most tornado activity. While it is not an official designation, states most commonly included are Texas, Oklahoma, Kansas, Nebraska, Missouri, Iowa, and South Dakota.

While not geographically part of tornado alley, Florida sees more tornados than any other state, especially when accounting for how large the state is. In general, the southeast region of the U.S. sees frequent tornadoes.

The average tornado only stays on the ground for 5 minutes, and approximately 77% are considered between EF-0 and EF-1, with about 95% below EF-3. Only .01% of tornadoes reach the highest category of EF-5. Even so, they can cause many fatalities and significant property damage at any level.

According to National Geographic, tornadoes cause approximately 80 deaths and more than 1,500 injuries per year. Property damage caused by tornadoes is incredibly difficult to calculate, and as such, little current information about damages per state exists.

While determining how much individual property damage tornadoes cause each year is difficult, it's estimated that tornadoes caused about $3.108 billion in damages in 2019.

The best information available on a per-state basis is 25 years old. The data can be extrapolated over the last two decades as tornado occurrences have increased. DEFINITION: Total cost of damage from tornadoes during 1950 to 1994, in adjusted U.S. dollars.

Here are the 10 states with the highest numbers of tornadoes:

  1. Texas (155)
  2. Kansas (96)
  3. Florida (66)
  4. Oklahoma (62)
  5. Nebraska (57)
  6. Illinois (54)
  7. Colorado (53)
  8. Iowa (51)
  9. Minnesota (45)
  10. Missouri (45)

Tornado Alley States 2021

* Data is averaged from period 1991–2010.
State Average Annual Number of Tornadoes 2021 Pop.
Texas15529,730,311
Kansas962,917,224
Florida6621,944,577
Oklahoma623,990,443
Nebraska571,951,996
Illinois5412,569,321
Colorado535,893,634
Iowa513,167,974
Missouri456,169,038
Minnesota455,706,398
Alabama444,934,193
Mississippi432,966,407
Arkansas393,033,946
Louisiana374,627,002
South Dakota36896,581
North Dakota32770,026
North Carolina3110,701,022
Georgia3010,830,007
South Carolina275,277,830
Tennessee266,944,260
Wisconsin245,852,490
Indiana226,805,663
Kentucky214,480,713
Ohio1911,714,618
Virginia188,603,985
Pennsylvania1612,804,123
Michigan169,992,427
Wyoming12581,075
New Mexico112,105,005
California1139,613,493
New York1019,299,981
Montana101,085,004
Maryland106,065,436
Idaho51,860,123
Arizona57,520,103
Washington37,796,941
Utah33,310,774
Oregon34,289,439
West Virginia21,767,859
New Jersey28,874,520
Nevada23,185,786
Maine21,354,522
Connecticut23,552,821
Vermont1623,251
New Hampshire11,372,203
Massachusetts16,912,239
Hawaii11,406,430
Delaware1990,334
Rhode Island1,061,509
Alaska724,357

Tornado Alley States 2021