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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.)					Daily Caloric Intake			Milk Cows			Major Territorial Acquisitions (U.S.)
Less than 1	1–5	6–10	11–15	More than 15	Class	Rank	Kilocalories per day	Class	Rank	Cows	Extent of U.S., 1803	Louisiana Purchase, 1803	West Florida, 1810–1813	British Cession, 1818	East Florida, 1819	Northern Maine, 1842	Texas Annexation, 1845	Oregon Country, 1846	Mexican Cession, 1848	Gadsden Purchase, 1853	Alaska, 1867	Hawaii, 1898












65.3%	51.1%	35.9%	21.6%	5.21%							91.6%	79.0%	7.81%	30.8%	98.3%	16.6%	50.1%	57.7%	66.4%	12.6%	63.8%	91.5%

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