According to the U.S. Geological Survey, the earthquake struck at 2:10 p.m. ET. and announced as 7.3-magnitude before being upgraded, was centered 86 miles northwest of Montego Bay, Jamaica, and 87 miles west-southwest of Niquero, Cuba, at a bottom of just 6 miles.
Buildings shook and tremors were felt beyond the Caribbean, although there were no immediate reports of casualties. Because the earthquakes happened off the land, far away from population centers, there was no known damage or fatalities. Few departments were temporarily evacuated in Miami and parts of Jamaica.
"Dangerous tsunami waves" were possible for coasts inhabited within 300km (186 miles) of the earthquake's epicenter, the PTWC originally declared as well as this held parts of Belize, Cuba, Honduras, Mexico, the Cayman Islands, and Jamaica. However, in an update at roughly 20:45 GMT, the PTWC stated the "tsunami threat had now largely passed".
Dutton stated, “ wherever on Tuesday’s massive earthquake occurred that were the North American and Caribbean plates— which is the central plate boundary in the area,”. However, there are definitely thousands of other faults and even some that don’t even map.
Individuals in Miami, 440 miles from the epicenter, observed moving. Miguel Charon was on the 13th floor of a building on Brickell Avenue. He said to CNN, he felt the walls move for 30 to 40 seconds. His initial thought was that it must have been caused by a machine of some sort. He told building officials issued an evacuation order and people left the building in a smooth and calm manner.
More than 4,600 individuals in Puerto Rico are yet living outside and waiting for the Caribbean to quit rumbling.