M3.1 Earthquake 41 km S of Skwentna, Alaska — May 23, 2025
2025-05-23 18:53:28 UTC (2025-05-23) · approx. 8:53 AM UTC-10 local
On May 23, 2025 at 18:53 UTC, a magnitude 3.1 intermediate depth earthquake struck 41 km S of Skwentna, Alaska, at a depth of 79.7 km and coordinates 61.6210°, -151.5413°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-151.5413°E
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Common Questions
How strong was the magnitude 3.1 earthquake near Skwentna, Alaska?
The magnitude 3.1 earthquake that struck 41 km S of Skwentna, Alaska on May 23, 2025 at 18:53 UTC had a depth of 79.7 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak0256ksvun8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, May 23, 2025). M3.1 Earthquake 41 km S of Skwentna, Alaska — May 23, 2025. Retrieved August 13, 2025 from https://www.earthquaketracker.org/earthquakes/event/ak0256ksvun8/