Alaska earthquakes

M3.1 earthquake 116 km E of Chignik, Alaska

A magnitude 3.1 earthquake struck 116 km E of Chignik, Alaska on Fri, Oct 15, 2021, 8:27 PM AKDT (04:27 UTC), 46 km (29 mi) below the surface.

A larger quake followed: M3.4 150 km SSW of Akhiok, Alaska. This one was a foreshock.

Naknek 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: 3.1 (ml), minor
Local time: Fri, Oct 15, 2021, 8:27 PM AKDT
UTC: 2021-10-16 04:27:35 UTC
Depth: 46.3 km (28.8 mi), shallow
Epicenter: 56.327° N, 156.530° 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: 120

Nearest places

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

Naknek, AlaskaPopulation 544. Forecast269 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 110 in the 60 days after this one and 89 in the 30 days before it.

After

The first 60 of 110.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021da0uw57 (also filed as us6000fv4q). Read Tue, Sep 22, 2026, 8:40 PM UTC.