Seychelles

Caribbean

Mauritius

None

Egypt

Libya

Southwest Asia and North Africa

Burundi

Comoros

Democratic Republic of Congo

Djibouti

Eritrea

eSwatini

Ethiopia

Kenya

Madagascar

Malawi

Rwanda

Sudan

Uganda

Zambia

Zimbabwe

Sub-Saharan Africa

A map shows COMESA members highlighted in orange: Egypt, Sudan, Ethiopia, Kenya, Uganda, Rwanda, Burundi, Comoros, Djibouti, Libya, Madagascar, Malawi, Mauritius, Eswatini, Zambia, and Zimbabwe.

Member states of the Common Market for Eastern and Southern Africa, an organization founded in 1994 to promote free trade among its members

Countries

World

COMESA

Common Market for Eastern and Southern Africa (COMESA) Members

Alaska

Arizona

Utah

District of Columbia

Florida

Idaho

New Hampshire

Rhode Island

Vermont

Washington

Wyoming

Montana

Maine

North Dakota

Kentucky

Virginia

Delaware

Mississippi

West Virginia

Nebraska

Texas

Missouri

Louisiana

Hawaii

North Carolina

Oregon

Alabama

New Mexico

Kansas

Wisconsin

British Columbia

New Jersey

South Carolina

Michigan

Connecticut

Pennsylvania

Colorado

Nevada

Massachusetts

Georgia

New York

Maryland

Oklahoma

Tennessee

California

Arkansas

South Dakota

Ohio

Indiana

Minnesota

Iowa

Illinois

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.

Tornado prevalence in the United States per 1,000 square miles per year

Average Number of Tornado Incidences per Year (U.S.)

North America

Tornado Archive

Tornadoes per 1,000 square miles per year

American Samoa (U.S.)

Australia

Cook Is. (New Zealand)

Fiji

French Polynesia (France)

Guam (U.S.)

Kiribati

Marshall Is.

Micronesia

Nauru

New Zealand

Niue (New Zealand)

Northern Mariana Is. (U.S.)

Palau

Papua New Guinea

Pitcairn Is. (U.K.)

Samoa

Solomon Is.

St. Helena (U.K.)

Tuvalu

Australia & Oceania

Anguilla (U.K.)

Antigua and Barbuda

Aruba (Neth.)

Bahamas

Barbados

Bermuda (U.K.)

British Virgin Is. (U.K.)

Cayman Is. (U.K.)

Cuba

Dominica

Dominican Republic

Grenada

Haiti

Jamaica

St. Kitts and Nevis

St. Lucia

St. Martin (France)

St. Vincent and the Grenadines

Trinidad and Tobago

Turks and Caicos Is. (U.K.)

U.S. Virgin Is. (U.S.)

Afghanistan

Kazakhstan

Kyrgyzstan

Tajikistan

Turkmenistan

Uzbekistan

Central Asia

China

Hong Kong S.A.R. (China)

Japan

Macau S.A.R. (China)

Mongolia

Nepal

North Korea

South Korea

Taiwan

East Asia

Armenia

Azerbaijan

Russia

Eurasia

Albania

Andorra

Austria

Belarus

Belgium

Bosnia and Herzegovina

Bulgaria

Croatia

Cyprus

Czechia

Denmark

Estonia

Finland

France

Germany

Gibraltar (U.K.)

Greece

Guernsey (U.K.)

Holy See (Vatican City)

Hungary

Iceland

Ireland

Isle of Man (U.K.)

Italy

Jersey (U.K.)

Latvia

Liechtenstein

Lithuania

Luxembourg

Malta

Moldova

Monaco

Montenegro

Montserrat (U.K.)

Netherlands

Northern Macedonia

Norway

Poland

Portugal

Romania

San Marino

Serbia

Slovakia

Slovenia

Spain

Sweden

Switzerland

Ukraine

United Kingdom

Europe

Argentina

Latin America

Common Market for Eastern and Southern Africa (COMESA) Members	Average Number of Tornado Incidences per Year (U.S.)					Change in Urbanization
Value	Less than 1	1–5	6–10	11–15	More than 15	Class	Rank	Percentage of annual change







	65.3%	51.1%	35.9%	21.6%	5.21%