M3.3 Earthquake 71 km N of Tierras Nuevas Poniente, Puerto Rico — December 25, 2023
2023-12-25 19:18:09 UTC (2023-12-25) · approx. 3:18 PM UTC-4 local
On December 25, 2023 at 19:18 UTC, a magnitude 3.3 shallow crustal earthquake struck 71 km N of Tierras Nuevas Poniente, Puerto Rico, at a depth of 19.7 km and coordinates 19.1047°, -66.4873°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.2 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 107 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.4873°E
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Common Questions
How strong was the magnitude 3.3 earthquake near Tierras Nuevas Poniente, Puerto Rico?
The magnitude 3.3 earthquake that struck 71 km N of Tierras Nuevas Poniente, Puerto Rico on December 25, 2023 at 19:18 UTC had a depth of 19.7 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.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71435288). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 25, 2023). M3.3 Earthquake 71 km N of Tierras Nuevas Poniente, Puerto Rico — December 25, 2023. Retrieved December 25, 2023 from https://www.earthquaketracker.org/earthquakes/event/pr71435288/