Average Number of Tornado Incidences per Year (U.S.)
North AmericaPhysical EnvironmentTornado prevalence in the United States per 1,000 square miles per year
Tornado ArchiveA map shows average tornado incidences per year in the U.S. The highest incidences (dark brown) are in Oklahoma, parts of Texas, Kansas, and Missouri. The lowest incidences (light yellow) are in Alaska, Washington, Oregon, and California.
Less than 1 | 1–5 | 6–10 | 11–15 | More than 15 | Tungsten Mines | Sea-Level Rise Vulnerability (2 m) | Major Iron-Producing Areas in North America | |
|---|---|---|---|---|---|---|---|---|
Vermont | 77.1% | 22.6% | ||||||
North Dakota | 29.5% | 70.5% | ||||||
Mississippi | 10.9% | 74.0% | 15.1% | |||||
West Virginia | 48.2% | 51.8% | ||||||
Nebraska | 88.6% | 11.4% | ||||||
Missouri | 23.4% | 62.5% | 14.1% | |||||
Kansas | 68.1% | 31.5% | ||||||
Wisconsin | 13.1% | 53.1% | 33.7% | |||||
British Columbia | 2.52% | |||||||
Connecticut | 99.9% | |||||||
Oklahoma | 3.41% | 35.1% | 46.0% | 15.5% | ||||
Tennessee | 41.3% | 58.7% | ||||||
Arkansas | 87.2% | 12.8% | ||||||
South Dakota | 22.1% | 76.0% | 1.85% | |||||
Ohio | 3.97% | 96.0% | ||||||
Indiana | 62.9% | 37.1% | ||||||
Iowa | 50.0% | 50.0% | ||||||
Illinois | 70.3% | 29.6% | ||||||
Arizona | 92.2% | 7.76% | 39 | |||||
Utah | 100% | 23 | ||||||
Yukon | 1 | |||||||
Idaho | 100% | 24 | ||||||
New Hampshire | 1.24% | 98.7% | 1 | |||||
Washington | 99.9% | 3 | ||||||
Wyoming | 87.7% | 12.3% | 1 | |||||
Montana | 100% | 12 | ||||||
Kentucky | 4.42% | 60.5% | 35.1% | 1 | ||||
New Brunswick | 3 | |||||||
New Mexico | 90.2% | 9.71% | 1 | |||||
Colorado | 69.4% | 30.6% | 83 | |||||
Nevada | 100% | 48 | ||||||
Alaska | 99.8% | 9 | 0.253% | |||||
Northwest Territories | 2 | 0.135% | ||||||
District of Columbia | 100% | 7.08% | ||||||
Florida | 64.2% | 35.5% | 1.05% | |||||
Rhode Island | 99.3% | 2.37% | ||||||
Nunavut | 0.130% | |||||||
Maine | 40.0% | 59.8% | 0.141% | |||||
Nova Scotia | 0.109% | |||||||
Virginia | 10.3% | 89.6% | 0.110% | |||||
Delaware | 99.2% | 4.34% | ||||||
Texas | 16.8% | 43.9% | 36.9% | 2.38% | 0.135% | |||
Louisiana | 30.4% | 69.5% | 12.6% | |||||
Hawaii | 92.1% | 1.13% | ||||||
North Carolina | 99.9% | 0.192% | ||||||
Oregon | 100% | 5 | 0.125% | |||||
New Jersey | 19.5% | 80.3% | 1 | 0.136% | ||||
South Carolina | 99.9% | 3.75% | ||||||
Massachusetts | 99.5% | 0.226% | ||||||
Georgia | 61.5% | 38.5% | 0.512% | |||||
Maryland | 99.3% | 0.387% | ||||||
California | 99.9% | 62 | 0.575% | |||||
Alabama | 69.5% | 16.4% | 14.0% | 0.218% | 1.64% | |||
Michigan | 34.8% | 64.8% | 2 | 3.89% | ||||
Pennsylvania | 6.15% | 93.9% | 1.67% | |||||
New York | 61.6% | 38.3% | 0.143% | 4.91% | ||||
Minnesota | 23.4% | 72.5% | 4.03% | 1.15% | ||||
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