M3.2 Earthquake 12 km SW of Santa Isabel, Puerto Rico — October 30, 2023
2023-10-30 16:36:34 UTC (2023-10-30) · approx. 12:36 PM UTC-4 local
On October 30, 2023 at 16:36 UTC, a magnitude 3.2 shallow crustal earthquake struck 12 km SW of Santa Isabel, Puerto Rico, at a depth of 29.8 km and coordinates 17.8753°, -66.4802°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 888 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 94 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.4802°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Santa Isabel, Puerto Rico?
The magnitude 3.2 earthquake that struck 12 km SW of Santa Isabel, Puerto Rico on October 30, 2023 at 16:36 UTC had a depth of 29.8 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: pr71430428). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 30, 2023). M3.2 Earthquake 12 km SW of Santa Isabel, Puerto Rico — October 30, 2023. Retrieved January 10, 2024 from https://www.earthquaketracker.org/earthquakes/event/pr71430428/