M3.6 Earthquake 98 km NNW of Charlotte Amalie, U.S. Virgin Islands — November 20, 2021
2021-11-20 19:22:10 UTC (2021-11-20) · approx. 3:22 PM UTC-4 local
On November 20, 2021 at 19:22 UTC, a magnitude 3.6 shallow crustal earthquake struck 98 km NNW of Charlotte Amalie, U.S. Virgin Islands, at a depth of 54.0 km and coordinates 19.2025°, -65.1523°.
Physical scale: An earthquake of magnitude 3.6 releases seismic energy equivalent to roughly 4.1 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 190 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-65.1523°E
Technical Information
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Common Questions
How strong was the magnitude 3.6 earthquake near Charlotte Amalie, U.S. Virgin Islands?
The magnitude 3.6 earthquake that struck 98 km NNW of Charlotte Amalie, U.S. Virgin Islands on November 20, 2021 at 19:22 UTC had a depth of 54.0 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 3.6 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.6 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2021324003). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 20, 2021). M3.6 Earthquake 98 km NNW of Charlotte Amalie, U.S. Virgin Islands — November 20, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/pr2021324003/