M 4.0 - 3 km SE of Port Clarence, Alaska
A magnitude 4.0 earthquake was recorded by USGS near 3 km SE of Port Clarence. On the USGS Earthquake Hazards Program scale, M4.0 is classified "Light". Among the 1,699 earthquake reports Areazine has published, this M4.0 event ranks stronger than 46% of them (rank #894 by magnitude).
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- Magnitude
- M 4.0
- USGS class
- Light
- Location
- 3 km SE of Port Clarence
- Archive rank
- #894 of 1,699
- Source
- USGS
- Published
- September 10, 2026
Stronger than 46% of the 1,699 earthquake reports in Areazine's archive, weaker than 893 others.
Record status: a point-in-time USGS detection. Aftershocks, revised magnitude, and felt-report data continue to update on USGS's own event page after publication.
What Happened
A M 4.0 ml earthquake struck 3 km SE of Port Clarence, Alaska, on 2026-10-11 at 12:23:10 UTC at a depth of 5 km.
Location Details
The event was located at latitude 65.244, longitude -166.793. The 5 km depth classifies it as shallow (less than 20 km).
Impact Assessment
No felt reports, tsunami advisory, or alert level information is available in the source data. The tsunami flag is reported as 0.
What You Should Know
This was a light earthquake. Minor events of this size are often felt but rarely cause damage. Aftershocks are possible following any earthquake.
Source
https://earthquake.usgs.gov/earthquakes/eventpage/aka2026rzfqpv - USGS
Original source: USGS Official Notice ↗
Related Earthquakes
All Earthquakes →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this USGS earthquake report: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (676 characters here).
Similar severity timing
Same severity (medium) notices issued closest in time to September 10, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.