M3.7 Earthquake 76 km N of Cruz Bay, U.S. Virgin Islands — November 22, 2021
2021-11-22 22:36:39 UTC (2021-11-22) · approx. 6:36 PM UTC-4 local
On November 22, 2021 at 22:36 UTC, a magnitude 3.7 intermediate depth earthquake struck 76 km N of Cruz Bay, U.S. Virgin Islands, at a depth of 74.0 km and coordinates 19.0083°, -64.6558°.
Physical scale: An earthquake of magnitude 3.7 releases seismic energy equivalent to roughly 5.2 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 212 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-64.6558°E
Technical Information
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Common Questions
How strong was the magnitude 3.7 earthquake near Cruz Bay, U.S. Virgin Islands?
The magnitude 3.7 earthquake that struck 76 km N of Cruz Bay, U.S. Virgin Islands on November 22, 2021 at 22:36 UTC had a depth of 74.0 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: pr2021326007). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 22, 2021). M3.7 Earthquake 76 km N of Cruz Bay, U.S. Virgin Islands — November 22, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/pr2021326007/