M3.1 Earthquake 145 km W of Adak, Alaska — November 25, 2023
2023-11-25 22:38:14 UTC (2023-11-25) · approx. 10:38 AM UTC-12 local
On November 25, 2023 at 22:38 UTC, a magnitude 3.1 intermediate depth earthquake struck 145 km W of Adak, Alaska, at a depth of 98.0 km and coordinates 51.6805°, -178.7202°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-178.7202°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Adak, Alaska?
The magnitude 3.1 earthquake that struck 145 km W of Adak, Alaska on November 25, 2023 at 22:38 UTC had a depth of 98.0 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000lhnm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 25, 2023). M3.1 Earthquake 145 km W of Adak, Alaska — November 25, 2023. Retrieved February 1, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lhnm/