M4.4 Earthquake 26 km W of Akutan, Alaska — September 5, 2025
2025-09-05 17:40:12 UTC (2025-09-05) · approx. 6:40 AM UTC-11 local
On September 5, 2025 at 17:40 UTC, a magnitude 4.4 intermediate depth earthquake struck 26 km W of Akutan, Alaska, at a depth of 103.0 km and coordinates 54.1633°, -166.1839°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Earthquake Details
-166.1839°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Akutan, Alaska?
The magnitude 4.4 earthquake that struck 26 km W of Akutan, Alaska on September 5, 2025 at 17:40 UTC had a depth of 103.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000qu8v). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 5, 2025). M4.4 Earthquake 26 km W of Akutan, Alaska — September 5, 2025. Retrieved November 30, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qu8v/