Earthquakes in Puerto Rico — Page 2

No events have been recorded in Puerto Rico in the past 30 days, though the great majority are too small to be felt at the surface. Activity here is almost entirely crustal, which means shaking at the surface is strong relative to the magnitudes involved.

125 earthquakes have been recorded in Puerto Rico in our catalogue, 0 of them in the past 30 days.

The average magnitude is 2.3 and the average focal depth 16 km. Nothing in this record reached magnitude 4, so none of it would have been widely felt.

The strongest earthquake recorded in Puerto Rico in this period was a magnitude 3.6 event near Lajas, Puerto Rico on 06 January 2025, at a depth of 13 km. A magnitude 3.6 earthquake radiates roughly 4.2 tons of TNT equivalent in seismic energy.

Locations recording the most events include Ensenada (30), Guayanilla (20), Guánica (17), Lajas (16), Yauco (9).

98% of events here are shallow (under 70 km), 2% intermediate (70–300 km) and 0% deep-focus (over 300 km). Almost everything here is crustal. That is characteristic of transform faulting or continental deformation rather than subduction — and it means shaking at the surface is strong for the magnitudes involved.

The deepest event on record here was a magnitude 2.6 earthquake at 78 km beneath Arecibo, Puerto Rico on 08 January 2025.

By band, the catalogue holds 18 in the magnitude 1 range, 98 in the magnitude 2 range, 9 in the magnitude 3 range.

The busiest single day was 23 December 2024, with 12 recorded events.

No event in this record carries a USGS link to NOAA tsunami information.