M3.7 Earthquake 141 km NNE of Vieques, Puerto Rico — May 28, 2023
2023-05-28 21:00:29 UTC (2023-05-28) · approx. 5:00 PM UTC-4 local
On May 28, 2023 at 21:00 UTC, a magnitude 3.7 shallow crustal earthquake struck 141 km NNE of Vieques, Puerto Rico, at a depth of 33.0 km and coordinates 19.6025°, -65.3200°.
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
-65.3200°E
Technical Information
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Common Questions
How strong was the magnitude 3.7 earthquake near Vieques, Puerto Rico?
The magnitude 3.7 earthquake that struck 141 km NNE of Vieques, Puerto Rico on May 28, 2023 at 21:00 UTC had a depth of 33.0 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: pr2023148010). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 28, 2023). M3.7 Earthquake 141 km NNE of Vieques, Puerto Rico — May 28, 2023. Retrieved August 5, 2023 from https://www.earthquaketracker.org/earthquakes/event/pr2023148010/