M3.0 Earthquake 31 km WSW of Stella, Puerto Rico — August 31, 2026
2026-08-31 20:37:30 UTC (57 min ago) · approx. 3:37 PM UTC-5 local
On August 31, 2026 at 20:37 UTC, a magnitude 3.0 shallow crustal earthquake struck 31 km WSW of Stella, Puerto Rico, at a depth of 8.1 km and coordinates 18.1778°, -67.5043°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 567 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 77 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-67.5043°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.0 earthquake near Stella, Puerto Rico?
The magnitude 3.0 earthquake that struck 31 km WSW of Stella, Puerto Rico on August 31, 2026 at 20:37 UTC had a depth of 8.1 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 3.0 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr71530473). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 31, 2026). M3.0 Earthquake 31 km WSW of Stella, Puerto Rico — August 31, 2026. Retrieved August 31, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71530473/