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M 3.3 Earthquake 8 km NE of Petersville, Alaska

Source: USGS · Alaska

A magnitude 3.3 earthquake was recorded by USGS near 8 km NE of Petersville. On the USGS Earthquake Hazards Program scale, M3.3 is classified "Minor". Among the 1,740 earthquake reports Areazine has published, this M3.3 event ranks stronger than 21% of them (rank #1,285 by magnitude).

30 seconds on this earthquake report

Magnitude
M 3.3
USGS class
Minor
Location
8 km NE of Petersville
Archive rank
#1,285 of 1,740
Source
USGS
Published
September 16, 2026
MINOR

Sits above 21% of the 1,740 earthquakes in the archive by magnitude; 1,284 ran stronger.

Record status: a snapshot from USGS, not a final record. Check USGS's own event page for aftershocks and any later revision to the magnitude shown here.

What Happened

A M 3.3 ml earthquake occurred 8 km NE of Petersville, Alaska, on 2026-09-16 at 12:34:41 UTC. The event was recorded at a depth of 74 km, which classifies as deep (>70 km). Coordinates are latitude 62.545, longitude -150.65.

Location Details

The earthquake was located 8 km northeast of Petersville, Alaska. The depth of 74 km indicates a deep-focus event.

Impact Assessment

No felt reports, tsunami advisory, or alert level information is available in the source data. Tsunami status is listed as 0.

What You Should Know

This was a minor earthquake (M 2.5-3.9) that is often felt but rarely causes damage. Aftershocks are possible following any earthquake.

Source

https://earthquake.usgs.gov/earthquakes/eventpage/aka2026sjcuwe - USGS

Original source: USGS Official Notice ↗

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Frequently Asked Questions

What people usually ask about a notice like this one.

How strong was this earthquake? ▾
A magnitude 3.3 ml earthquake struck 8 km northeast of Petersville, Alaska, at a depth of 74 km.
What does a magnitude 3.3 ("Minor") earthquake mean? ▾
The USGS classifies M3.3 as "Minor" on its Earthquake Hazards Program scale. Events in this range are rarely felt beyond the immediate epicenter and typically cause no damage; most are recorded only by seismographs.
Where does this event rank against Areazine's other recorded earthquakes? ▾
This is the #1,285 strongest of the 1,740 earthquake reports in Areazine's archive by magnitude, stronger than 21% of them and weaker than 1,284 others.
Was Petersville likely to feel this earthquake? ▾
This event was centered 8 km NE of Petersville. Shaking intensity falls off sharply with distance from the epicenter and depends on depth and local geology, so check the USGS "Did You Feel It?" report for this event for real felt-shaking data rather than assuming from magnitude and distance alone.

Where this data comes from

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