M3.4 Earthquake 158 km SE of Chignik, Alaska — January 10, 2023
2023-01-10 20:13:10 UTC (2023-01-10) · approx. 10:13 AM UTC-10 local
On January 10, 2023 at 20:13 UTC, a magnitude 3.4 shallow crustal earthquake struck 158 km SE of Chignik, Alaska, at a depth of 10.8 km and coordinates 55.1990°, -156.7951°.
Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.9 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 134 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-156.7951°E
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Common Questions
How strong was the magnitude 3.4 earthquake near Chignik, Alaska?
The magnitude 3.4 earthquake that struck 158 km SE of Chignik, Alaska on January 10, 2023 at 20:13 UTC had a depth of 10.8 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 3.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.4 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak023gvcy4u). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, January 10, 2023). M3.4 Earthquake 158 km SE of Chignik, Alaska — January 10, 2023. Retrieved March 20, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak023gvcy4u/