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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.)

Tungsten Mines

High- and Low-Pressure Zones, January

Hydroelectric Power Production

Less than 1

1–5

6–10

11–15

More than 15

Tungsten Mines

High

Bad Creek Hydroelectric Power Plant SC USA

Bath County Pumped Storage Hydroelecric Power Plant VA USA

Beauharnois Hydroelectric Power Plant Canada

Bersimis-1 Hydroelectric Power Plant Canada

Blenheim Gilboa Pumped Storage Hydroelectric Power Plant NY USA

Bonneville Hydro Power Plant OR USA

Boundary Dam Hydro Power Plant WA USA

Castaic Pumped Storage Hydroelectric Power Plant CA USA

Chief Joseph Hydro Power Plant WA USA

Churchill Falls Hydroelectric Generating Station Canada

G M Shrum (W.A.C. Bennett) Hydroelectric Power Plant Canada

Glen Canyon Dam Hydro Power Plant AZ USA

Grand Coulee Hydro Power Plant WA USA

Helms Pumped Storage Hydroelectric Power Plant CA USA

Hoover Dam Hydro Power Plant AZ/NV USA

John Day Hydro Power Plant OR USA

Kettle Rapids Hydroelectric generating Station Canada

La Grande-1 Hydroelectric Generating Station Canada

La Grande-2-A Hydroelectric Generating Station Canada

La grande-3 Hydroelectric Generating Station Canada

La grande-4 Hydroelectric Generating Station Canada

Limestone Hydroelectric Generating Station Canada

Long Spruce Hydroelectric Geneerating Station Canada

Ludington Hydro Power Plant MI USA

Manic-2 (Jean-Lesage) Hydroelectric Generating Station Canada

Manic-3 (Rene-Levesque) Hydroelectric Generating Station Canada

Manic-5 Hydroelectric Generating Station Canada

Manic-5-PA Hydroelectric generating Station Canada

Mica Creek Hydroelectric Power Plant Canada

Muddy Run Pumped Storage Hydro Power Plant PA USA

Northfield Mountain Pumped Storage Hydro Power Plant MA USA

Outardes-3 Hydroelectric Power Plant Canada

R.H. Saunders Hydroelectric Power Plant Canada

Raccoon Mountain Pumped Storage Hydro Power Plant TN USA

Revelstoke Hydroelectric Power Plant Canada

Robert Moses Niagara Hydro Power Plant NY USA

Robert-Bourassa Hydroelectric Generating Station Canada

Rocky Mountain Pumped Storage Hydro Hydro Power Plant GA USA

Rocky Reach Hydro Power Plant WA USA

Sir Adam Beck II Hydroelectric Generating Station Canada

The Dalles Hydro Power Plant OR USA

Toktogul Hydroelectric Power Plant Kyrgyzstan

Wanapum Hydro Power Plant WA USA

District of Columbia
100%
Florida
64.2%35.5%
Rhode Island
99.3%
Vermont
77.1%22.6%
Maine
40.0%59.8%
North Dakota
29.5%70.5%
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%
Alabama
69.5%16.4%14.0%
Kansas
68.1%31.5%
Wisconsin
13.1%53.1%33.7%
Maryland
99.3%
Oklahoma
3.41%35.1%46.0%15.5%
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%
Alaska
99.8%9
Yukon
1
Northwest Territories
2
Idaho
100%24
New Hampshire
1.24%98.7%1
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
New Jersey
19.5%80.3%1
Colorado
69.4%30.6%83
Nevada
100%48
Utah
100%231
Arizona
92.2%7.76%3911
Washington
99.9%3111111
Virginia
10.3%89.6%1
Oregon
100%511
British Columbia
2.52%111
Newfoundland and Labrador
1
South Carolina
99.9%1
Michigan
34.8%64.8%21
Connecticut
99.9%1
Pennsylvania
6.15%93.9%1
Massachusetts
99.5%1
Georgia
61.5%38.5%1
New York
61.6%38.3%111
Québec
111111111111
Manitoba
111
Tennessee
41.3%58.7%1
Ontario
1
California
99.9%6211
0.16.0