3.9

M3.9 Earthquake 135 km NNE of Cruz Bay, U.S. Virgin IslandsSeptember 5, 2024

2024-09-05 15:51:29 UTC (2024-09-05) · approx. 11:51 AM UTC-4 local

MagnitudeM3.9(md)
Time15:51 UTC11:51 AM UTC-4
Depth71.0 kmintermediate depth
Coordinates19.498°, -64.415°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 5, 2024 at 15:51 UTC, a magnitude 3.9 intermediate depth earthquake struck 135 km NNE of Cruz Bay, U.S. Virgin Islands, at a depth of 71.0 km and coordinates 19.4983°, -64.4150°.

Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 12 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 310 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 19.50°, -64.42°

Earthquake Details

Magnitude
3.9 md
Depth
71.0 km
intermediate depth
Location
19.4983°N
-64.4150°E

Technical Information

Event ID
pr2024249001
Event Type
earthquake
Status
✓ Reviewed
Significance
238
Stations Used
11
Azimuthal Gap
310.0°
Min Station Distance
1.102°
RMS Residual
0.32 sec
Last Updated
2024-11-15 16:19:57 UTC

Common Questions

How strong was the magnitude 3.9 earthquake near Cruz Bay, U.S. Virgin Islands?

The magnitude 3.9 earthquake that struck 135 km NNE of Cruz Bay, U.S. Virgin Islands on September 5, 2024 at 15:51 UTC had a depth of 71.0 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 3.9 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.9 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: pr2024249001). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, September 5, 2024). M3.9 Earthquake 135 km NNE of Cruz Bay, U.S. Virgin IslandsSeptember 5, 2024. Retrieved November 15, 2024 from https://www.earthquaketracker.org/earthquakes/event/pr2024249001/