M3.5 Earthquake 92 km N of Charlotte Amalie, U.S. Virgin Islands — September 22, 2021
2021-09-22 22:36:09 UTC (2021-09-22) · approx. 6:36 PM UTC-4 local
On September 22, 2021 at 22:36 UTC, a magnitude 3.5 intermediate depth earthquake struck 92 km N of Charlotte Amalie, U.S. Virgin Islands, at a depth of 75.0 km and coordinates 19.1745°, -64.9588°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 3.0 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 164 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-64.9588°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.5 earthquake near Charlotte Amalie, U.S. Virgin Islands?
The magnitude 3.5 earthquake that struck 92 km N of Charlotte Amalie, U.S. Virgin Islands on September 22, 2021 at 22:36 UTC had a depth of 75.0 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2021265010). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 22, 2021). M3.5 Earthquake 92 km N of Charlotte Amalie, U.S. Virgin Islands — September 22, 2021. Retrieved September 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2021265010/