M3.0 Earthquake near Rat Islands, Aleutian Islands, Alaska — August 23, 2026
2026-08-23 23:42:35 UTC (1 day ago) · approx. 11:42 AM UTC+12 local
On August 23, 2026 at 23:42 UTC, a magnitude 3.0 shallow crustal earthquake struck near Rat Islands, Aleutian Islands, Alaska, at a depth of 18.6 km and coordinates 50.9950°, 178.5280°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
178.5280°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Rat Islands, Aleutian Islands, Alaska?
The magnitude 3.0 earthquake that struck near Rat Islands, Aleutian Islands, Alaska on August 23, 2026 at 23:42 UTC had a depth of 18.6 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026qsaocx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 23, 2026). M3.0 Earthquake near Rat Islands, Aleutian Islands, Alaska — August 23, 2026. Retrieved August 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026qsaocx/