M3.1 Earthquake 104 km NNE of Cruz Bay, U.S. Virgin Islands — May 21, 2026
2026-05-21 17:51:51 UTC (2026-05-21) · approx. 1:51 PM UTC-4 local
On May 21, 2026 at 17:51 UTC, a magnitude 3.1 shallow crustal earthquake struck 104 km NNE of Cruz Bay, U.S. Virgin Islands, at a depth of 40.8 km and coordinates 19.1990°, -64.3918°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 801 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 90 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-64.3918°E
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Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.1 earthquake near Cruz Bay, U.S. Virgin Islands?
The magnitude 3.1 earthquake that struck 104 km NNE of Cruz Bay, U.S. Virgin Islands on May 21, 2026 at 17:51 UTC had a depth of 40.8 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71517498). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 21, 2026). M3.1 Earthquake 104 km NNE of Cruz Bay, U.S. Virgin Islands — May 21, 2026. Retrieved June 2, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71517498/