3.2

M3.2 Earthquake 51 km NNE of Vieques, Puerto RicoApril 28, 2026

2026-04-28 02:37:08 UTC (3 hours ago) · approx. 10:37 PM UTC-4 local

MagnitudeM3.2(md)
Time02:37 UTC10:37 PM UTC-4
Depth10.8 kmshallow crustal
Coordinates18.865°, -65.683°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 28, 2026 at 02:37 UTC, a magnitude 3.2 shallow crustal earthquake struck 51 km NNE of Vieques, Puerto Rico, at a depth of 10.8 km and coordinates 18.8653°, -65.6827°.

Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 858 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 93 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.87°, -65.68°

Earthquake Details

Magnitude
3.2 md
Depth
10.8 km
shallow crustal
Location
18.8653°N
-65.6827°E

Technical Information

Event ID
pr71514878
Event Type
earthquake
Status
✓ Reviewed
Significance
155
Stations Used
25
Azimuthal Gap
219.0°
Min Station Distance
0.609°
RMS Residual
0.22 sec
Last Updated
2026-04-28 04:13:45 UTC

Common Questions

How strong was the magnitude 3.2 earthquake near Vieques, Puerto Rico?

The magnitude 3.2 earthquake that struck 51 km NNE of Vieques, Puerto Rico on April 28, 2026 at 02:37 UTC had a depth of 10.8 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.2 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: pr71514878). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 28, 2026). M3.2 Earthquake 51 km NNE of Vieques, Puerto RicoApril 28, 2026. Retrieved April 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71514878/