3.4

M3.4 Earthquake 86 km SW of Pole Ojea, Puerto RicoJune 1, 2026

2026-06-01 13:38:59 UTC (2 hours ago) · approx. 8:38 AM UTC-5 local

MagnitudeM3.4(md)
Time13:38 UTC8:38 AM UTC-5
Depth27.7 kmshallow crustal
Coordinates17.419°, -67.764°
Felt byNo felt reports
Status✓ Reviewed by USGS

On June 1, 2026 at 13:38 UTC, a magnitude 3.4 shallow crustal earthquake struck 86 km SW of Pole Ojea, Puerto Rico, at a depth of 27.7 km and coordinates 17.4195°, -67.7637°.

Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 2.1 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 140 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 17.42°, -67.76°

Earthquake Details

Magnitude
3.4 md
Depth
27.7 km
shallow crustal
Location
17.4195°N
-67.7637°E

Technical Information

Event ID
pr71518493
Event Type
earthquake
Status
✓ Reviewed
Significance
181
Stations Used
17
Azimuthal Gap
243.0°
Min Station Distance
0.854°
RMS Residual
0.19 sec
Last Updated
2026-06-01 14:34:40 UTC

Common Questions

How strong was the magnitude 3.4 earthquake near Pole Ojea, Puerto Rico?

The magnitude 3.4 earthquake that struck 86 km SW of Pole Ojea, Puerto Rico on June 1, 2026 at 13:38 UTC had a depth of 27.7 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: pr71518493). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, June 1, 2026). M3.4 Earthquake 86 km SW of Pole Ojea, Puerto RicoJune 1, 2026. Retrieved June 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71518493/