Cuba & United States — United States Geological Survey

Cuba: Cuba experienced a 6.1 magnitude earthquake near its western coast, causing buildings in Cuba — Havana to shake and sparking panic. While no immediate injuries or significant damage were reported, the event highlights the nation's vulnerability to seismic activity.

United States — United States Geological Survey: The United States — United States Geological Survey reported the preliminary information about the earthquake's epicenter and confirmed it was the largest recorded in the Gulf of Mexico with modern instruments.

Cuba: Cuba sent rescue teams to Venezuela to assist in the earthquake relief efforts.

United States — United States Geological Survey: The United States — United States Geological Survey reported the magnitudes and epicenters of the earthquakes and issued a high-level PAGER alert, warning of potentially catastrophic human and economic losses.

Cuba: Cuba's long-standing medical mission in Venezuela was ended, cutting off a key resource in underserved communities, which exacerbated the healthcare crisis following the earthquakes.

United States — United States Geological Survey: The United States — United States Geological Survey provided measurements of the earthquake magnitudes and aftershocks, contributing to the scientific understanding of the seismic events.