M3.5 Earthquake 100 km N of Culebra, Puerto Rico — April 26, 2026
2026-04-26 11:29:51 UTC (2 hours ago) · approx. 7:29 AM UTC-4 local
On April 26, 2026 at 11:29 UTC, a magnitude 3.5 shallow crustal earthquake struck 100 km N of Culebra, Puerto Rico, at a depth of 12.0 km and coordinates 19.2140°, -65.2778°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 154 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-65.2778°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.5 earthquake near Culebra, Puerto Rico?
The magnitude 3.5 earthquake that struck 100 km N of Culebra, Puerto Rico on April 26, 2026 at 11:29 UTC had a depth of 12.0 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 3.5 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.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2026116002). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 26, 2026). M3.5 Earthquake 100 km N of Culebra, Puerto Rico — April 26, 2026. Retrieved April 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr2026116002/