M3.2 Earthquake 8 km WSW of Guánica, Puerto Rico — December 23, 2024
2024-12-23 17:07:27 UTC (2024-12-23) · approx. 1:07 PM UTC-4 local
On December 23, 2024 at 17:07 UTC, a magnitude 3.2 shallow crustal earthquake struck 8 km WSW of Guánica, Puerto Rico, at a depth of 15.4 km and coordinates 17.9358°, -66.9743°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 829 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 91 m — a useful intuition for the size of the slip patch on the fault.

Earthquake Details
-66.9743°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Guánica, Puerto Rico?
The magnitude 3.2 earthquake that struck 8 km WSW of Guánica, Puerto Rico on December 23, 2024 at 17:07 UTC had a depth of 15.4 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.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71469188). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, December 23, 2024). M3.2 Earthquake 8 km WSW of Guánica, Puerto Rico — December 23, 2024. Retrieved March 8, 2025 from https://www.earthquaketracker.org/earthquakes/event/pr71469188/