M3.2 Earthquake 102 km ENE of Chignik, Alaska — August 1, 2023
2023-08-01 23:45:59 UTC (2023-08-01) · approx. 1:45 PM UTC-10 local
On August 1, 2023 at 23:45 UTC, a magnitude 3.2 shallow crustal earthquake struck 102 km ENE of Chignik, Alaska, at a depth of 29.5 km and coordinates 56.5492°, -156.8049°.
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
-156.8049°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Chignik, Alaska?
The magnitude 3.2 earthquake that struck 102 km ENE of Chignik, Alaska on August 1, 2023 at 23:45 UTC had a depth of 29.5 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: ak0239snfnx2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 1, 2023). M3.2 Earthquake 102 km ENE of Chignik, Alaska — August 1, 2023. Retrieved October 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak0239snfnx2/