M3.4 Earthquake 97 km N of Charlotte Amalie, U.S. Virgin Islands — January 19, 2021
2021-01-19 18:33:37 UTC (2021-01-19) · approx. 2:33 PM UTC-4 local
On January 19, 2021 at 18:33 UTC, a magnitude 3.4 shallow crustal earthquake struck 97 km N of Charlotte Amalie, U.S. Virgin Islands, at a depth of 25.0 km and coordinates 19.2105°, -64.8041°.
Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.8 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 129 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-64.8041°E
Technical Information
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Common Questions
How strong was the magnitude 3.4 earthquake near Charlotte Amalie, U.S. Virgin Islands?
The magnitude 3.4 earthquake that struck 97 km N of Charlotte Amalie, U.S. Virgin Islands on January 19, 2021 at 18:33 UTC had a depth of 25.0 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 3.4 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: pr2021019129). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 19, 2021). M3.4 Earthquake 97 km N of Charlotte Amalie, U.S. Virgin Islands — January 19, 2021. Retrieved September 12, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2021019129/