M3.8 Earthquake 41 km SSE of False Pass, Alaska — January 25, 2022
2022-01-25 21:56:36 UTC (2022-01-25) · approx. 10:56 AM UTC-11 local
On January 25, 2022 at 21:56 UTC, a magnitude 3.8 shallow crustal earthquake struck 41 km SSE of False Pass, Alaska, at a depth of 10.0 km and coordinates 54.4910°, -163.2607°.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-163.2607°E
Technical Information
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Common Questions
How strong was the magnitude 3.8 earthquake near False Pass, Alaska?
The magnitude 3.8 earthquake that struck 41 km SSE of False Pass, Alaska on January 25, 2022 at 21:56 UTC had a depth of 10.0 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 3.8 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.8 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000gf42). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 25, 2022). M3.8 Earthquake 41 km SSE of False Pass, Alaska — January 25, 2022. Retrieved April 9, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gf42/