M4.1 Earthquake 267 km SSE of King Cove, Alaska — November 21, 2025
2025-11-21 22:33:25 UTC (2025-11-21) · approx. 11:33 AM UTC-11 local
On November 21, 2025 at 22:33 UTC, a magnitude 4.1 shallow crustal earthquake struck 267 km SSE of King Cove, Alaska, at a depth of 10.0 km and coordinates 52.7204°, -161.3684°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 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
-161.3684°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake near King Cove, Alaska?
The magnitude 4.1 earthquake that struck 267 km SSE of King Cove, Alaska on November 21, 2025 at 22:33 UTC had a depth of 10.0 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 4.1 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Actions
Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000rpqk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, November 21, 2025). M4.1 Earthquake 267 km SSE of King Cove, Alaska — November 21, 2025. Retrieved May 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rpqk/