M3.1 Earthquake 71 km NNE of Cruz Bay, U.S. Virgin Islands — July 13, 2023
2023-07-13 16:41:46 UTC (2023-07-13) · approx. 12:41 PM UTC-4 local
On July 13, 2023 at 16:41 UTC, a magnitude 3.1 shallow crustal earthquake struck 71 km NNE of Cruz Bay, U.S. Virgin Islands, at a depth of 58.9 km and coordinates 18.9253°, -64.5368°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 801 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 90 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-64.5368°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.1 earthquake near Cruz Bay, U.S. Virgin Islands?
The magnitude 3.1 earthquake that struck 71 km NNE of Cruz Bay, U.S. Virgin Islands on July 13, 2023 at 16:41 UTC had a depth of 58.9 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 3.1 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71417708). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 13, 2023). M3.1 Earthquake 71 km NNE of Cruz Bay, U.S. Virgin Islands — July 13, 2023. Retrieved September 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/pr71417708/