M3.7 Earthquake 264 km W of Adak, Alaska — August 29, 2025
2025-08-29 22:12:17 UTC (2025-08-29) · approx. 10:12 AM UTC+12 local
On August 29, 2025 at 22:12 UTC, a magnitude 3.7 intermediate depth earthquake struck 264 km W of Adak, Alaska, at a depth of 76.9 km and coordinates 51.5963°, 179.5663°.
Physical scale: An earthquake of magnitude 3.7 releases seismic energy equivalent to roughly 5.4 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 215 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
179.5663°E
Technical Information
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Common Questions
How strong was the magnitude 3.7 earthquake near Adak, Alaska?
The magnitude 3.7 earthquake that struck 264 km W of Adak, Alaska on August 29, 2025 at 22:12 UTC had a depth of 76.9 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 3.7 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.7 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000rmu7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 29, 2025). M3.7 Earthquake 264 km W of Adak, Alaska — August 29, 2025. Retrieved November 19, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rmu7/