M3.2 Earthquake 56 km ESE of King Salmon, Alaska — October 22, 2022
2022-10-22 23:47:20 UTC (2022-10-22) · approx. 1:47 PM UTC-10 local
On October 22, 2022 at 23:47 UTC, a magnitude 3.2 intermediate depth earthquake struck 56 km ESE of King Salmon, Alaska, at a depth of 154.5 km and coordinates 58.4174°, -155.8321°.
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
-155.8321°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near King Salmon, Alaska?
The magnitude 3.2 earthquake that struck 56 km ESE of King Salmon, Alaska on October 22, 2022 at 23:47 UTC had a depth of 154.5 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 3.2 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: ak022dk9igux). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, October 22, 2022). M3.2 Earthquake 56 km ESE of King Salmon, Alaska — October 22, 2022. Retrieved January 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak022dk9igux/