3.4

M3.4 Earthquake 71 km NE of Cruz Bay, U.S. Virgin IslandsApril 6, 2026

2026-04-06 18:41:44 UTC (2026-04-06) · approx. 2:41 PM UTC-4 local

MagnitudeM3.4(md)
Time18:41 UTC2:41 PM UTC-4
Depth5.4 kmshallow crustal
Coordinates18.787°, -64.317°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 6, 2026 at 18:41 UTC, a magnitude 3.4 shallow crustal earthquake struck 71 km NE of Cruz Bay, U.S. Virgin Islands, at a depth of 5.4 km and coordinates 18.7870°, -64.3172°.

Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 125 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.79°, -64.32°

Earthquake Details

Magnitude
3.4 md
Depth
5.4 km
shallow crustal
Location
18.7870°N
-64.3172°E

Technical Information

Event ID
pr71513063
Event Type
earthquake
Status
✓ Reviewed
Significance
174
Stations Used
7
Azimuthal Gap
299.0°
Min Station Distance
0.306°
RMS Residual
0.12 sec
Last Updated
2026-04-16 15:59:28 UTC

Common Questions

How strong was the magnitude 3.4 earthquake near Cruz Bay, U.S. Virgin Islands?

The magnitude 3.4 earthquake that struck 71 km NE of Cruz Bay, U.S. Virgin Islands on April 6, 2026 at 18:41 UTC had a depth of 5.4 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.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: pr71513063). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 6, 2026). M3.4 Earthquake 71 km NE of Cruz Bay, U.S. Virgin IslandsApril 6, 2026. Retrieved May 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71513063/