M3.0 Earthquake 37 km W of Skwentna, Alaska — January 31, 2022
2022-01-31 18:31:51 UTC (2022-01-31) · approx. 8:31 AM UTC-10 local
On January 31, 2022 at 18:31 UTC, a magnitude 3.0 intermediate depth earthquake struck 37 km W of Skwentna, Alaska, at a depth of 121.2 km and coordinates 61.9268°, -152.0997°.
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
-152.0997°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Skwentna, Alaska?
The magnitude 3.0 earthquake that struck 37 km W of Skwentna, Alaska on January 31, 2022 at 18:31 UTC had a depth of 121.2 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: ak0221fkkb8z). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 31, 2022). M3.0 Earthquake 37 km W of Skwentna, Alaska — January 31, 2022. Retrieved April 15, 2022 from https://www.earthquaketracker.org/earthquakes/event/ak0221fkkb8z/