3.3

M3.3 Earthquake 52 km W of Stella, Puerto RicoMarch 27, 2025

2025-03-27 17:48:41 UTC (2025-03-27) · approx. 12:48 PM UTC-5 local

MagnitudeM3.3(md)
Time17:48 UTC12:48 PM UTC-5
Depth93.1 kmintermediate depth
Coordinates18.239°, -67.736°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 27, 2025 at 17:48 UTC, a magnitude 3.3 intermediate depth earthquake struck 52 km W of Stella, Puerto Rico, at a depth of 93.1 km and coordinates 18.2388°, -67.7362°.

Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 110 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.24°, -67.74°

Earthquake Details

Magnitude
3.3 md
Depth
93.1 km
intermediate depth
Location
18.2388°N
-67.7362°E

Technical Information

Event ID
pr71477678
Event Type
earthquake
Status
✓ Reviewed
Significance
166
Stations Used
12
Azimuthal Gap
178.0°
Min Station Distance
0.621°
RMS Residual
0.24 sec
Last Updated
2025-06-06 21:12:25 UTC

Common Questions

How strong was the magnitude 3.3 earthquake near Stella, Puerto Rico?

The magnitude 3.3 earthquake that struck 52 km W of Stella, Puerto Rico on March 27, 2025 at 17:48 UTC had a depth of 93.1 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 3.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.3 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: pr71477678). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, March 27, 2025). M3.3 Earthquake 52 km W of Stella, Puerto RicoMarch 27, 2025. Retrieved June 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/pr71477678/