M3.7 Earthquake 81 km N of Isabela, Puerto Rico — February 23, 2022
2022-02-23 21:23:15 UTC (2022-02-23) · approx. 5:23 PM UTC-4 local
On February 23, 2022 at 21:23 UTC, a magnitude 3.7 shallow crustal earthquake struck 81 km N of Isabela, Puerto Rico, at a depth of 21.0 km and coordinates 19.2340°, -67.0083°.
Physical scale: An earthquake of magnitude 3.7 releases seismic energy equivalent to roughly 4.8 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 205 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-67.0083°E
Technical Information
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Common Questions
How strong was the magnitude 3.7 earthquake near Isabela, Puerto Rico?
The magnitude 3.7 earthquake that struck 81 km N of Isabela, Puerto Rico on February 23, 2022 at 21:23 UTC had a depth of 21.0 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 3.7 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.7 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2022054002). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, February 23, 2022). M3.7 Earthquake 81 km N of Isabela, Puerto Rico — February 23, 2022. Retrieved May 4, 2022 from https://www.earthquaketracker.org/earthquakes/event/pr2022054002/