3.1

M3.1 Earthquake 73 km NE of Cruz Bay, U.S. Virgin IslandsOctober 11, 2024

2024-10-11 16:20:35 UTC (2024-10-11) · approx. 12:20 PM UTC-4 local

MagnitudeM3.1(md)
Time16:20 UTC12:20 PM UTC-4
Depth17.3 kmshallow crustal
Coordinates18.836°, -64.339°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 11, 2024 at 16:20 UTC, a magnitude 3.1 shallow crustal earthquake struck 73 km NE of Cruz Bay, U.S. Virgin Islands, at a depth of 17.3 km and coordinates 18.8360°, -64.3390°.

Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 773 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 88 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.84°, -64.34°

Earthquake Details

Magnitude
3.1 md
Depth
17.3 km
shallow crustal
Location
18.8360°N
-64.3390°E

Technical Information

Event ID
pr71462373
Event Type
earthquake
Status
✓ Reviewed
Significance
152
Stations Used
9
Azimuthal Gap
317.0°
Min Station Distance
0.492°
RMS Residual
0.16 sec
Last Updated
2024-12-23 15:46:53 UTC

Common Questions

How strong was the magnitude 3.1 earthquake near Cruz Bay, U.S. Virgin Islands?

The magnitude 3.1 earthquake that struck 73 km NE of Cruz Bay, U.S. Virgin Islands on October 11, 2024 at 16:20 UTC had a depth of 17.3 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.

Understanding This Data

Magnitude 3.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: pr71462373). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, October 11, 2024). M3.1 Earthquake 73 km NE of Cruz Bay, U.S. Virgin IslandsOctober 11, 2024. Retrieved December 23, 2024 from https://www.earthquaketracker.org/earthquakes/event/pr71462373/