M3.1 Earthquake 6 km WSW of Guánica, Puerto Rico — September 26, 2020
2020-09-26 20:14:17 UTC (2020-09-26) · approx. 4:14 PM UTC-4 local
On September 26, 2020 at 20:14 UTC, a magnitude 3.1 shallow crustal earthquake struck 6 km WSW of Guánica, Puerto Rico, at a depth of 7.0 km and coordinates 17.9405°, -66.9568°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 801 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 90 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.9568°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.1 earthquake near Guánica, Puerto Rico?
The magnitude 3.1 earthquake that struck 6 km WSW of Guánica, Puerto Rico on September 26, 2020 at 20:14 UTC had a depth of 7.0 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 3.1 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2020270022). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, September 26, 2020). M3.1 Earthquake 6 km WSW of Guánica, Puerto Rico — September 26, 2020. Retrieved December 5, 2020 from https://www.earthquaketracker.org/earthquakes/event/pr2020270022/