M3.2 Earthquake 47 km N of Larsen Bay, Alaska — April 13, 2025
2025-04-13 21:42:41 UTC (2025-04-13) · approx. 11:42 AM UTC-10 local
On April 13, 2025 at 21:42 UTC, a magnitude 3.2 shallow crustal earthquake struck 47 km N of Larsen Bay, Alaska, at a depth of 56.8 km and coordinates 57.9625°, -154.0155°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 951 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 97 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-154.0155°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Larsen Bay, Alaska?
The magnitude 3.2 earthquake that struck 47 km N of Larsen Bay, Alaska on April 13, 2025 at 21:42 UTC had a depth of 56.8 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 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak0254qp3xsb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 13, 2025). M3.2 Earthquake 47 km N of Larsen Bay, Alaska — April 13, 2025. Retrieved June 14, 2025 from https://www.earthquaketracker.org/earthquakes/event/ak0254qp3xsb/