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Average Number of Tornado Incidences per Year (U.S.)

North AmericaPhysical Environment

Tornado prevalence in the United States per 1,000 square miles per year

Tornado Archive

A 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.

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Average Number of Tornado Incidences per Year (U.S.)

Less than 1

1–5

6–10

11–15

More than 15

Alaska
99.8%
Arizona
92.2%7.76%
Utah
100%
District of Columbia
100%
Florida
64.2%35.5%
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%
Virginia
10.3%89.6%
Delaware
99.2%
Mississippi
10.9%74.0%15.1%
West Virginia
48.2%51.8%
Nebraska
88.6%11.4%
Texas
16.8%43.9%36.9%2.38%
Missouri
23.4%62.5%14.1%
Louisiana
30.4%69.5%
Hawaii
92.1%
North Carolina
99.9%
Oregon
100%
Alabama
69.5%16.4%14.0%
New Mexico
90.2%9.71%
Kansas
68.1%31.5%
Wisconsin
13.1%53.1%33.7%
British Columbia
2.52%
New Jersey
19.5%80.3%
South Carolina
99.9%
Michigan
34.8%64.8%
Connecticut
99.9%
Pennsylvania
6.15%93.9%
Colorado
69.4%30.6%
Nevada
100%
Massachusetts
99.5%
Georgia
61.5%38.5%
New York
61.6%38.3%
Maryland
99.3%
Oklahoma
3.41%35.1%46.0%15.5%
Tennessee
41.3%58.7%
California
99.9%
Arkansas
87.2%12.8%
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%
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