Community

Earthquake Strikes Western Puerto Rico

Published Oct 3, 2026, 6:53 AM ASTvia Primera Hora

Why this matters: For Puerto Rico, located in a zone of interaction between the North American and Caribbean tectonic plates, this earthquake is a reminder of the island’s frequent seismic activity.

Our coverage

Quakes: the latest felt near Puerto Rico

A magnitude 3.93 earthquake struck western Puerto Rico early Saturday, according to the Puerto Rico Seismic Network (RSPR). The quake occurred at 6:35 AM at a depth of approximately 32 kilometers, with its epicenter located in the Mona Canyon at 18.466 latitude and -67.351 longitude. The RSPR, part of the University of Puerto Rico’s Mayagüez Campus Geology Department, detected and analyzed the seismic activity.

As the earthquake was considered mild, there were no tsunami warnings, alerts, or watches issued for Puerto Rico or the US Virgin Islands. Puerto Rico is located in an area of interaction between the North American and Caribbean tectonic plates, resulting in frequent seismic activity. The RSPR identifies the Mona Canyon as one of the region’s seismic zones.

In context (787daily, from public data)

  • Mayagüez

    70,828Census estimate, 2020–20241760Founded77.6 sq mi (201 km²)Area
SourcePrimera Hora

Our coverage

Quakes: the latest felt near Puerto Rico

More in Community