M3.1 Earthquake 30 km NNW of Cold Bay, Alaska — January 10, 2022
2022-01-10 22:25:34 UTC (2022-01-10) · approx. 11:25 AM UTC-11 local
On January 10, 2022 at 22:25 UTC, a magnitude 3.1 intermediate depth earthquake struck 30 km NNW of Cold Bay, Alaska, at a depth of 207.6 km and coordinates 55.4233°, -162.9730°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-162.9730°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Cold Bay, Alaska?
The magnitude 3.1 earthquake that struck 30 km NNW of Cold Bay, Alaska on January 10, 2022 at 22:25 UTC had a depth of 207.6 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000gapn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 10, 2022). M3.1 Earthquake 30 km NNW of Cold Bay, Alaska — January 10, 2022. Retrieved March 19, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gapn/