M4.2 Earthquake 162 km S of False Pass, Alaska — October 5, 2024
2024-10-05 23:34:16 UTC (2024-10-05) · approx. 12:34 PM UTC-11 local
On October 5, 2024 at 23:34 UTC, a magnitude 4.2 shallow crustal earthquake struck 162 km S of False Pass, Alaska, at a depth of 10.0 km and coordinates 53.3953°, -163.2309°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-163.2309°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near False Pass, Alaska?
The magnitude 4.2 earthquake that struck 162 km S of False Pass, Alaska on October 5, 2024 at 23:34 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000nwst). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, October 5, 2024). M4.2 Earthquake 162 km S of False Pass, Alaska — October 5, 2024. Retrieved December 14, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000nwst/