WMO Region 4
- Barbados
- Belize
- Canada
- Costa Rica
- Cuba
- Dominican Republic
- El Salvador
- Grenada
- Guatemala
- Haiti
- Honduras
- Jamaica
- Mexico
- Nicaragua
- Panama
- Saint Kitts And Nevis
- The Bahamas
- Trinidad And Tobago
- United States Of America
- Antigua And Barbuda
- Bermuda (U.K.)
- British Virgin Islands (U.K.)
- Cayman Islands (U.K.)
- Dominica
- Greenland (Denmark)
- Guadeloupe (France)
- Martinique (France)
- Netherlands Antilles (Netherlands)
- Puerto Rico (U.S.A.)
- Saint Lucia
- Saint Vincent And The Grenadines
- Saint Pierre & Miquelon Island (France)
- Turks And Caicos Islands
- Virgin Islands (U.S.A.)