M3.3 Earthquake 151 km W of Adak, Alaska — July 25, 2026
2026-07-25 21:24:09 UTC (1 day ago) · approx. 9:24 AM UTC-12 local
On July 25, 2026 at 21:24 UTC, a magnitude 3.3 shallow crustal earthquake struck 151 km W of Adak, Alaska, at a depth of 15.8 km and coordinates 51.6967°, -178.8167°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.4 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 116 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-178.8167°E
Technical Information
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Common Questions
How strong was the magnitude 3.3 earthquake near Adak, Alaska?
The magnitude 3.3 earthquake that struck 151 km W of Adak, Alaska on July 25, 2026 at 21:24 UTC had a depth of 15.8 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 3.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: av94333183). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 25, 2026). M3.3 Earthquake 151 km W of Adak, Alaska — July 25, 2026. Retrieved July 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/av94333183/