The ICG/CARIBE EWS is comprised of the following:
- Member States of the IOC from the Caribbean and Adjacent Regions;
- Observers from other IOC Member States;
- Invited observers from other organizations (including non-governmental organisations), programmes and projects in accordance with the IOC rules and procedures.
Member States

Antigua and Barbuda

Aruba
Bahamas

Barbados
Belize

Brazil
Canada

Colombia
Costa Rica
Cuba

Curaçao
Dominica

Dominican Republic

France (Martinique, Guadeloupe, St. Martin, Guyane, St. Barthelemy)
Grenada

Guatemala
Guyana
Haiti
Honduras
Jamaica
Mexico

Netherlands (Bonaire, Saba, Sint Eustatius)
Nicaragua

Panama
Saint Lucia

St. Kitts and Nevis

St. Martin

St. Vincent and the Grenadines

Suriname
Trinidad and Tobago
United Kingdom (Anguilla, British Virgin Islands, Bermuda, Cayman Islands, Montserrat, Turks and Caicos)
United States (Puerto Rico, US Virgin Islands)

Venezuela (Bolivarian Republic of)
Observers from other IOC Member States
Observers from other IOC Member States with designated tsunami warning focal points (TWFP) are Canada and Peru.
Observer Organizations
Caribbean Disaster Emergency Management Agency (CDEMA)
Caribbean Institute for Meteorology and Hydrology (CIMH)
Coordination Centre for the Prevention of Natural Disasters in Central America (CEPREDENAC)
Puerto Rico Seismic Network, University of Puerto Rico, Mayagüez (PRSN)
Seismic Research Centre, University of the West Indies, Trinidad and Tobago (SRC)
United Nations Development Programme, Barbados and the OECS (UNDP)
World Meteorological Organization (WMO)


