M3.5 Earthquake 11 km NNE of Atka, Alaska — October 24, 2026
2026-10-24 05:57:31 UTC (1 day ago) · approx. 5:57 PM UTC-12 local
On October 24, 2026 at 05:57 UTC, a magnitude 3.5 intermediate depth earthquake struck 11 km NNE of Atka, Alaska, at a depth of 206.3 km and coordinates 52.2944°, -174.1628°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-174.1628°E
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Common Questions
How strong was the magnitude 3.5 earthquake near Atka, Alaska?
The magnitude 3.5 earthquake that struck 11 km NNE of Atka, Alaska on October 24, 2026 at 05:57 UTC had a depth of 206.3 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000u4n9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 24, 2026). M3.5 Earthquake 11 km NNE of Atka, Alaska — October 24, 2026. Retrieved October 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000u4n9/