M3.2 Earthquake 40 km NW of Nikolski, Alaska — April 23, 2025
2025-04-23 20:34:42 UTC (2025-04-23) · approx. 9:34 AM UTC-11 local
On April 23, 2025 at 20:34 UTC, a magnitude 3.2 intermediate depth earthquake struck 40 km NW of Nikolski, Alaska, at a depth of 112.1 km and coordinates 53.1498°, -169.3562°.
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
-169.3562°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Nikolski, Alaska?
The magnitude 3.2 earthquake that struck 40 km NW of Nikolski, Alaska on April 23, 2025 at 20:34 UTC had a depth of 112.1 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 3.2 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: us7000pxar). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 23, 2025). M3.2 Earthquake 40 km NW of Nikolski, Alaska — April 23, 2025. Retrieved July 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pxar/