M3.0 Earthquake 99 km SE of Atka, Alaska — July 25, 2026
2026-07-25 23:16:09 UTC (2026-07-25) · approx. 11:16 AM UTC-12 local
On July 25, 2026 at 23:16 UTC, a magnitude 3.0 shallow crustal earthquake struck 99 km SE of Atka, Alaska, at a depth of 35.0 km and coordinates 51.5047°, -173.2837°.
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
-173.2837°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Atka, Alaska?
The magnitude 3.0 earthquake that struck 99 km SE of Atka, Alaska on July 25, 2026 at 23:16 UTC had a depth of 35.0 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: us6000tg6h). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 25, 2026). M3.0 Earthquake 99 km SE of Atka, Alaska — July 25, 2026. Retrieved August 11, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tg6h/