M3.1 Earthquake 45 km E of Pedro Bay, Alaska — September 28, 2026
2026-09-28 01:03:39 UTC (50 min ago) · approx. 3:03 PM UTC-10 local
On September 28, 2026 at 01:03 UTC, a magnitude 3.1 intermediate depth earthquake struck 45 km E of Pedro Bay, Alaska, at a depth of 139.0 km and coordinates 59.8160°, -153.3030°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-153.3030°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Pedro Bay, Alaska?
The magnitude 3.1 earthquake that struck 45 km E of Pedro Bay, Alaska on September 28, 2026 at 01:03 UTC had a depth of 139.0 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026teuaqx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 28, 2026). M3.1 Earthquake 45 km E of Pedro Bay, Alaska — September 28, 2026. Retrieved September 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026teuaqx/