3.1

M3.1 Earthquake 27 km W of Rincón, Puerto RicoMay 25, 2025

2025-05-25 23:38:55 UTC (2025-05-25) · approx. 6:38 PM UTC-5 local

MagnitudeM3.1(md)
Time23:38 UTC6:38 PM UTC-5
Depth5.6 kmshallow crustal
Coordinates18.378°, -67.505°
Felt by1DYFI response
Status✓ Reviewed by USGS

On May 25, 2025 at 23:38 UTC, a magnitude 3.1 shallow crustal earthquake struck 27 km W of Rincón, Puerto Rico, at a depth of 5.6 km and coordinates 18.3782°, -67.5050°.

Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 722 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 86 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.38°, -67.50°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M3.1 earthquake near 27 km W of Rincón, Puerto Rico

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
3.1 md
Depth
5.6 km
shallow crustal
Location
18.3782°N
-67.5050°E
Felt Reports
1
DYFI responses
Community Intensity
1.0
CDI from reports

Technical Information

Event ID
pr71483628
Event Type
earthquake
Status
✓ Reviewed
Significance
150
Stations Used
14
Azimuthal Gap
152.0°
Min Station Distance
0.246°
RMS Residual
0.51 sec
Last Updated
2025-05-26 01:18:41 UTC

Common Questions

How strong was the magnitude 3.1 earthquake near Rincón, Puerto Rico?

The magnitude 3.1 earthquake that struck 27 km W of Rincón, Puerto Rico on May 25, 2025 at 23:38 UTC had a depth of 5.6 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 3.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: pr71483628). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, May 25, 2025). M3.1 Earthquake 27 km W of Rincón, Puerto RicoMay 25, 2025. Retrieved May 26, 2025 from https://www.earthquaketracker.org/earthquakes/event/pr71483628/