M3.4 Earthquake 85 km NE of Cruz Bay, U.S. Virgin Islands — April 20, 2025
2025-04-20 21:25:50 UTC (2025-04-20) · approx. 5:25 PM UTC-4 local
On April 20, 2025 at 21:25 UTC, a magnitude 3.4 shallow crustal earthquake struck 85 km NE of Cruz Bay, U.S. Virgin Islands, at a depth of 33.9 km and coordinates 18.8738°, -64.2165°.
Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 2.1 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 140 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-64.2165°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.4 earthquake near Cruz Bay, U.S. Virgin Islands?
The magnitude 3.4 earthquake that struck 85 km NE of Cruz Bay, U.S. Virgin Islands on April 20, 2025 at 21:25 UTC had a depth of 33.9 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 3.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.4 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71479553). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 20, 2025). M3.4 Earthquake 85 km NE of Cruz Bay, U.S. Virgin Islands — April 20, 2025. Retrieved June 27, 2025 from https://www.earthquaketracker.org/earthquakes/event/pr71479553/