M3.0 Earthquake 63 km SE of Port Graham, Alaska — October 1, 2026
2026-10-01 15:13:16 UTC (1 hour ago) · approx. 5:13 AM UTC-10 local
On October 1, 2026 at 15:13 UTC, a magnitude 3.0 shallow crustal earthquake struck 63 km SE of Port Graham, Alaska, at a depth of 54.5 km and coordinates 58.9770°, -150.9940°.
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
-150.9940°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.0 earthquake near Port Graham, Alaska?
The magnitude 3.0 earthquake that struck 63 km SE of Port Graham, Alaska on October 1, 2026 at 15:13 UTC had a depth of 54.5 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.
Actions
Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026tlkkpe). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 1, 2026). M3.0 Earthquake 63 km SE of Port Graham, Alaska — October 1, 2026. Retrieved October 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026tlkkpe/