M3.0 Earthquake 9 km SSW of Tallaboa, Puerto Rico — November 8, 2021
2021-11-08 23:20:29 UTC (2021-11-08) · approx. 7:20 PM UTC-4 local
On November 8, 2021 at 23:20 UTC, a magnitude 3.0 shallow crustal earthquake struck 9 km SSW of Tallaboa, Puerto Rico, at a depth of 6.0 km and coordinates 17.9155°, -66.7471°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 567 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 77 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.7471°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Tallaboa, Puerto Rico?
The magnitude 3.0 earthquake that struck 9 km SSW of Tallaboa, Puerto Rico on November 8, 2021 at 23:20 UTC had a depth of 6.0 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2021312005). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 8, 2021). M3.0 Earthquake 9 km SSW of Tallaboa, Puerto Rico — November 8, 2021. Retrieved November 8, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2021312005/