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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.)					Sea-Surface Temperature Anomalies: El Niño					Salt Marshes	Annual Wine Production			Religious Affiliations (U.S.)									Poor Urban Air Quality
Less than 1	1–5	6–10	11–15	More than 15	-0.25 to 0.25	0.75 to 1.0	1.0 to 1.25	1.25 to 1.5	1.5 to 1.75	Salt Marshes	Class	Rank	Metric tons	African American, Protestant	Hispanic, Catholic	Hispanic, Evangelical Protestant	Native American, Catholic	Non-Hispanic White, Catholic	Non-Hispanic White, Evangelical Protestant	Non-Hispanic White, Mainline Protestant	Non-Hispanic White, Mormon	Other	Regina	Houston	Philadelphia	Oklahoma City	San Antonio	Boulder	Wichita	Portland	Irvine	Minneapolis	Boise	Winnipeg	Spring Hill	Greeley	St. Louis	Detroit	West Palm Beach	Columbus	Augusta	McAllen	Topeka	Las Cruces	Bakersfield	Oceanside	Reno	Indianapolis	Stockton	Baton Rouge	Glendale	Salinas	Trenton	Aurora	Modesto	Nogales	Rock Island	Fresno	Covington











65.3%	51.1%	35.9%	21.6%	5.21%	0.311%	1.20%	0.159%	0.444%	2.10%	0.594%				1.47%	4.11%	3.35%	3.31%	3.50%	2.93%	2.02%	2.96%	21.4%	1	1	1

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