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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

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.)					Distribution of Calcium Carbonate in Modern Surface Sediments					Tropical Forests	Pacific Islands Forum (PIF)
Less than 1	1–5	6–10	11–15	More than 15	0 - 20	20 - 40	40 - 60	60 - 80	80 - 100	Tropical Forests	Value

65.3%	51.1%	35.9%	21.6%	5.21%	0.901%	0.642%	0.436%	1.54%	0.943%	1.15%

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