M3.3 Earthquake 70 km NE of Cruz Bay, U.S. Virgin Islands — July 20, 2026
2026-07-20 07:20:34 UTC (9 hours ago) · approx. 3:20 AM UTC-4 local
On July 20, 2026 at 07:20 UTC, a magnitude 3.3 shallow crustal earthquake struck 70 km NE of Cruz Bay, U.S. Virgin Islands, at a depth of 23.2 km and coordinates 18.8387°, -64.3843°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.5 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 120 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-64.3843°E
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Common Questions
How strong was the magnitude 3.3 earthquake near Cruz Bay, U.S. Virgin Islands?
The magnitude 3.3 earthquake that struck 70 km NE of Cruz Bay, U.S. Virgin Islands on July 20, 2026 at 07:20 UTC had a depth of 23.2 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 3.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71525078). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 20, 2026). M3.3 Earthquake 70 km NE of Cruz Bay, U.S. Virgin Islands — July 20, 2026. Retrieved July 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71525078/