M3.1 Earthquake 115 km ESE of Akutan, Alaska — January 21, 2024
2024-01-21 20:58:55 UTC (2024-01-21) · approx. 9:58 AM UTC-11 local
On January 21, 2024 at 20:58 UTC, a magnitude 3.1 shallow crustal earthquake struck 115 km ESE of Akutan, Alaska, at a depth of 31.8 km and coordinates 53.7178°, -164.1616°.
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
-164.1616°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Akutan, Alaska?
The magnitude 3.1 earthquake that struck 115 km ESE of Akutan, Alaska on January 21, 2024 at 20:58 UTC had a depth of 31.8 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: us7000lw01). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, January 21, 2024). M3.1 Earthquake 115 km ESE of Akutan, Alaska — January 21, 2024. Retrieved March 29, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lw01/