M3.3 Earthquake 8 km NE of Petersville, Alaska — September 16, 2026
2026-09-16 07:34:41 UTC (22 min ago) · approx. 9:34 PM UTC-10 local
On September 16, 2026 at 07:34 UTC, a magnitude 3.3 intermediate depth earthquake struck 8 km NE of Petersville, Alaska, at a depth of 74.0 km and coordinates 62.5450°, -150.6500°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-150.6500°E
Technical Information
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Common Questions
How strong was the magnitude 3.3 earthquake near Petersville, Alaska?
The magnitude 3.3 earthquake that struck 8 km NE of Petersville, Alaska on September 16, 2026 at 07:34 UTC had a depth of 74.0 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 3.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026sjcuwe). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 16, 2026). M3.3 Earthquake 8 km NE of Petersville, Alaska — September 16, 2026. Retrieved September 16, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026sjcuwe/