M3.1 Earthquake 53 km SSW of King Cove, Alaska — September 11, 2026
2026-09-11 18:05:56 UTC (3 days ago) · approx. 7:05 AM UTC-11 local
On September 11, 2026 at 18:05 UTC, a magnitude 3.1 shallow crustal earthquake struck 53 km SSW of King Cove, Alaska, at a depth of 62.5 km and coordinates 54.6100°, -162.6000°.
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
-162.6000°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near King Cove, Alaska?
The magnitude 3.1 earthquake that struck 53 km SSW of King Cove, Alaska on September 11, 2026 at 18:05 UTC had a depth of 62.5 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: aka2026sartjg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 11, 2026). M3.1 Earthquake 53 km SSW of King Cove, Alaska — September 11, 2026. Retrieved September 14, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026sartjg/