M3.0 Earthquake 78 km ENE of Port Alsworth, Alaska — July 11, 2026
2026-07-11 21:25:42 UTC (52 min ago) · approx. 11:25 AM UTC-10 local
On July 11, 2026 at 21:25 UTC, a magnitude 3.0 intermediate depth earthquake struck 78 km ENE of Port Alsworth, Alaska, at a depth of 143.6 km and coordinates 60.3770°, -152.9340°.
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
-152.9340°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.0 earthquake near Port Alsworth, Alaska?
The magnitude 3.0 earthquake that struck 78 km ENE of Port Alsworth, Alaska on July 11, 2026 at 21:25 UTC had a depth of 143.6 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.
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.
Actions
Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026nqlbis). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 11, 2026). M3.0 Earthquake 78 km ENE of Port Alsworth, Alaska — July 11, 2026. Retrieved July 11, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026nqlbis/