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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.)

Tropical Forests

Change in Urbanization

Students per Teacher in Primary School

Water Resources Vulnerability

Less than 1

1–5

6–10

11–15

More than 15

Tropical Forests

Class

Rank

Percentage of annual change

Class

Rank

Value

No data

Arid and low water use

Low (<10%)

Low-medium (10-20%)

Medium-high (20-40%)

High (40-80%)

Extremely high (>80%)

65.3%51.1%35.9%21.6%5.21%1.15%0.654%3.65%47.2%4.86%6.22%9.97%14.9%
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