M3.3 Earthquake near 75.2 km SSW of Luquillo, Puerto Rico — November 16, 2020
2020-11-16 23:55:27 UTC (2020-11-16) · approx. 7:55 PM UTC-4 local
On November 16, 2020 at 23:55 UTC, a magnitude 3.3 shallow crustal earthquake struck near 75.2 km SSW of Luquillo, Puerto Rico, at a depth of 29.0 km and coordinates 18.9836°, -65.4053°.
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
-65.4053°E
Technical Information
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Common Questions
How strong was the magnitude 3.3 earthquake near 75.2 km SSW of Luquillo, Puerto Rico?
The magnitude 3.3 earthquake that struck near 75.2 km SSW of Luquillo, Puerto Rico on November 16, 2020 at 23:55 UTC had a depth of 29.0 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 3.3 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: pr2020321015). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, November 16, 2020). M3.3 Earthquake near 75.2 km SSW of Luquillo, Puerto Rico — November 16, 2020. Retrieved November 17, 2020 from https://www.earthquaketracker.org/earthquakes/event/pr2020321015/