M3.5 Earthquake 110 km W of Nikolski, Alaska — October 28, 2023
2023-10-28 18:43:12 UTC (2023-10-28) · approx. 7:43 AM UTC-11 local
On October 28, 2023 at 18:43 UTC, a magnitude 3.5 intermediate depth earthquake struck 110 km W of Nikolski, Alaska, at a depth of 98.1 km and coordinates 52.7576°, -170.4746°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-170.4746°E
Technical Information
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Common Questions
How strong was the magnitude 3.5 earthquake near Nikolski, Alaska?
The magnitude 3.5 earthquake that struck 110 km W of Nikolski, Alaska on October 28, 2023 at 18:43 UTC had a depth of 98.1 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000la4z). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 28, 2023). M3.5 Earthquake 110 km W of Nikolski, Alaska — October 28, 2023. Retrieved January 4, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000la4z/