M3.1 Earthquake 8 km SSE of Guánica, Puerto Rico — November 7, 2020
2020-11-07 23:10:56 UTC (2020-11-07) · approx. 7:10 PM UTC-4 local
On November 7, 2020 at 23:10 UTC, a magnitude 3.1 shallow crustal earthquake struck 8 km SSE of Guánica, Puerto Rico, at a depth of 14.0 km and coordinates 17.9021°, -66.8721°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 773 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 88 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.8721°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Guánica, Puerto Rico?
The magnitude 3.1 earthquake that struck 8 km SSE of Guánica, Puerto Rico on November 7, 2020 at 23:10 UTC had a depth of 14.0 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: pr2020312009). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, November 7, 2020). M3.1 Earthquake 8 km SSE of Guánica, Puerto Rico — November 7, 2020. Retrieved January 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2020312009/