The earthquake took place at 6.23 p.m. Eastern Time Saturday, the US Geological Survey (USGS) reported.
Based on all available data, there is a tsunami threat to Puerto Rico and the Virgin Islands as sea level fluctuations and strong ocean currents could be a hazard along coasts, beaches, in harbors and in coastal waters.
The generation of tsunami waves has not yet been confirmed, and the NTWC is monitoring to evaluate the tsunami threat.
Residents in Puerto Rico and the Virgin Islands are advised to move out of the water, off the beach and away from harbors, marinas, bays and inlets and not go to shore to observe the tsunami.