M3.6 Earthquake 95 km S of False Pass, Alaska — October 19, 2023
2023-10-19 17:53:09 UTC (2023-10-19) · approx. 6:53 AM UTC-11 local
On October 19, 2023 at 17:53 UTC, a magnitude 3.6 shallow crustal earthquake struck 95 km S of False Pass, Alaska, at a depth of 35.0 km and coordinates 54.0018°, -163.4968°.
Physical scale: An earthquake of magnitude 3.6 releases seismic energy equivalent to roughly 3.8 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 184 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-163.4968°E
Technical Information
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Common Questions
How strong was the magnitude 3.6 earthquake near False Pass, Alaska?
The magnitude 3.6 earthquake that struck 95 km S of False Pass, Alaska on October 19, 2023 at 17:53 UTC had a depth of 35.0 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 3.6 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.6 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000lgp8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 19, 2023). M3.6 Earthquake 95 km S of False Pass, Alaska — October 19, 2023. Retrieved December 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lgp8/