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 | Acadiana | Black Belt | Cuban South Florida | French-Canadian Quebec | Hispanic borderlands | Navajo Reservation | Nunavut | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alaska | 99.8% | |||||||||||
Idaho | 100% | |||||||||||
New Hampshire | 1.24% | 98.7% | ||||||||||
Rhode Island | 99.3% | |||||||||||
Vermont | 77.1% | 22.6% | ||||||||||
Washington | 99.9% | |||||||||||
Wyoming | 87.7% | 12.3% | ||||||||||
Montana | 100% | |||||||||||
Maine | 40.0% | 59.8% | ||||||||||
North Dakota | 29.5% | 70.5% | ||||||||||
Kentucky | 4.42% | 60.5% | 35.1% | |||||||||
Delaware | 99.2% | |||||||||||
West Virginia | 48.2% | 51.8% | ||||||||||
Nebraska | 88.6% | 11.4% | ||||||||||
Missouri | 23.4% | 62.5% | 14.1% | |||||||||
Hawaii | 92.1% | |||||||||||
Oregon | 100% | |||||||||||
Kansas | 68.1% | 31.5% | ||||||||||
Wisconsin | 13.1% | 53.1% | 33.7% | |||||||||
British Columbia | 2.52% | |||||||||||
New Jersey | 19.5% | 80.3% | ||||||||||
Michigan | 34.8% | 64.8% | ||||||||||
Connecticut | 99.9% | |||||||||||
Pennsylvania | 6.15% | 93.9% | ||||||||||
Nevada | 100% | |||||||||||
Massachusetts | 99.5% | |||||||||||
New York | 61.6% | 38.3% | ||||||||||
Oklahoma | 3.41% | 35.1% | 46.0% | 15.5% | ||||||||
South Dakota | 22.1% | 76.0% | 1.85% | |||||||||
Ohio | 3.97% | 96.0% | ||||||||||
Indiana | 62.9% | 37.1% | ||||||||||
Minnesota | 23.4% | 72.5% | 4.03% | |||||||||
Iowa | 50.0% | 50.0% | ||||||||||
Illinois | 70.3% | 29.6% | ||||||||||
Arizona | 92.2% | 7.76% | 48.4% | 14.0% | ||||||||
Utah | 100% | 1.23% | ||||||||||
District of Columbia | 100% | 100% | ||||||||||
Florida | 64.2% | 35.5% | 3.77% | |||||||||
Nunavut | 98.3% | |||||||||||
Virginia | 10.3% | 89.6% | 29.1% | |||||||||
Mississippi | 10.9% | 74.0% | 15.1% | 63.6% | ||||||||
Texas | 16.8% | 43.9% | 36.9% | 2.38% | 56.1% | |||||||
Louisiana | 30.4% | 69.5% | 20.6% | 48.2% | ||||||||
North Carolina | 99.9% | 54.7% | ||||||||||
Alabama | 69.5% | 16.4% | 14.0% | 48.6% | ||||||||
New Mexico | 90.2% | 9.71% | 89.9% | 3.98% | ||||||||
South Carolina | 99.9% | 70.7% | ||||||||||
Colorado | 69.4% | 30.6% | 17.0% | |||||||||
Georgia | 61.5% | 38.5% | 62.2% | |||||||||
Maryland | 99.3% | 16.4% | ||||||||||
Québec | 99.6% | |||||||||||
Tennessee | 41.3% | 58.7% | 2.75% | |||||||||
California | 99.9% | 49.1% | ||||||||||
Arkansas | 87.2% | 12.8% | 20.3% | |||||||||
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