Alaska earthquakes

M3.3 earthquake 164 km SE of Chignik, Alaska

A magnitude 3.3 earthquake struck 164 km SE of Chignik, Alaska on Sat, Sep 4, 2021, 6:23 AM AKDT (14:23 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.9 197 km SE of Chignik, Alaska. This one was a foreshock.

Sand Point forecast More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.3 (ml), minor
Local time: Sat, Sep 4, 2021, 6:23 AM AKDT
UTC: 2021-09-04 14:23:55 UTC
Depth: 5.8 km (3.6 mi), shallow
Epicenter: 55.170° N, 156.711° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used: 71

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Sand Point, AlaskaPopulation 1,064. Forecast241 kmE

Nearby

Within 100 km, magnitude 1.5 and up: 64 in the 60 days after this one and 135 in the 30 days before it.

After

The first 60 of 64.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bcq7u4q (also filed as us7000f7xq). Read Thu, Sep 24, 2026, 7:57 AM UTC.