M3.1 Earthquake 254 km WSW of Adak, Alaska — November 17, 2023
2023-11-17 23:01:39 UTC (2023-11-17) · approx. 11:01 AM UTC+12 local
On November 17, 2023 at 23:01 UTC, a magnitude 3.1 shallow crustal earthquake struck 254 km WSW of Adak, Alaska, at a depth of 25.6 km and coordinates 51.2312°, 179.8380°.
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
179.8380°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 254 km WSW of Adak, Alaska on November 17, 2023 at 23:01 UTC had a depth of 25.6 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: us7000lg8p). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 17, 2023). M3.1 Earthquake 254 km WSW of Adak, Alaska — November 17, 2023. Retrieved January 26, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lg8p/