M3.1 Earthquake 71 km N of Tierras Nuevas Poniente, Puerto Rico — June 27, 2025
2025-06-27 23:30:09 UTC (2025-06-27) · approx. 7:30 PM UTC-4 local
On June 27, 2025 at 23:30 UTC, a magnitude 3.1 shallow crustal earthquake struck 71 km N of Tierras Nuevas Poniente, Puerto Rico, at a depth of 30.6 km and coordinates 19.1077°, -66.4685°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 607 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 79 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.4685°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Tierras Nuevas Poniente, Puerto Rico?
The magnitude 3.1 earthquake that struck 71 km N of Tierras Nuevas Poniente, Puerto Rico on June 27, 2025 at 23:30 UTC had a depth of 30.6 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.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71487383). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, June 27, 2025). M3.1 Earthquake 71 km N of Tierras Nuevas Poniente, Puerto Rico — June 27, 2025. Retrieved September 4, 2025 from https://www.earthquaketracker.org/earthquakes/event/pr71487383/