M3.2 Earthquake 76 km SW of Port Clarence, Alaska — October 28, 2023
2023-10-28 23:11:09 UTC (2023-10-28) · approx. 12:11 PM UTC-11 local
On October 28, 2023 at 23:11 UTC, a magnitude 3.2 shallow crustal earthquake struck 76 km SW of Port Clarence, Alaska, at a depth of 24.4 km and coordinates 64.8045°, -168.0490°.
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
-168.0490°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Port Clarence, Alaska?
The magnitude 3.2 earthquake that struck 76 km SW of Port Clarence, Alaska on October 28, 2023 at 23:11 UTC had a depth of 24.4 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: ak023du6it6e). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 28, 2023). M3.2 Earthquake 76 km SW of Port Clarence, Alaska — October 28, 2023. Retrieved January 4, 2024 from https://www.earthquaketracker.org/earthquakes/event/ak023du6it6e/