M3.0 Earthquake 17 km WSW of Chignik Lake, Alaska — March 23, 2025
2025-03-23 18:09:10 UTC (2025-03-23) · approx. 7:09 AM UTC-11 local
On March 23, 2025 at 18:09 UTC, a magnitude 3.0 intermediate depth earthquake struck 17 km WSW of Chignik Lake, Alaska, at a depth of 115.5 km and coordinates 56.2101°, -159.0257°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-159.0257°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Chignik Lake, Alaska?
The magnitude 3.0 earthquake that struck 17 km WSW of Chignik Lake, Alaska on March 23, 2025 at 18:09 UTC had a depth of 115.5 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.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak0253rwu7i5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 23, 2025). M3.0 Earthquake 17 km WSW of Chignik Lake, Alaska — March 23, 2025. Retrieved May 29, 2025 from https://www.earthquaketracker.org/earthquakes/event/ak0253rwu7i5/