M3.2 Earthquake 44 km N of Arecibo, Puerto Rico — September 7, 2020
2020-09-07 17:35:03 UTC (2020-09-07) · approx. 1:35 PM UTC-4 local
On September 7, 2020 at 17:35 UTC, a magnitude 3.2 shallow crustal earthquake struck 44 km N of Arecibo, Puerto Rico, at a depth of 53.0 km and coordinates 18.8696°, -66.6626°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 1.1 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 102 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.6626°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Arecibo, Puerto Rico?
The magnitude 3.2 earthquake that struck 44 km N of Arecibo, Puerto Rico on September 7, 2020 at 17:35 UTC had a depth of 53.0 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 3.2 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: pr2020251015). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, September 7, 2020). M3.2 Earthquake 44 km N of Arecibo, Puerto Rico — September 7, 2020. Retrieved November 17, 2020 from https://www.earthquaketracker.org/earthquakes/event/pr2020251015/