Alaska earthquakes

M3.3 earthquake 115 km E of Chignik, Alaska

A magnitude 3.3 earthquake struck 115 km E of Chignik, Alaska on Tue, Oct 12, 2021, 11:05 AM AKDT (19:05 UTC), 67 km (42 mi) below the surface.

A larger quake followed: M3.4 115 km E of Chignik, 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: 3.3 (ml), minor
Local time: Tue, Oct 12, 2021, 11:05 AM AKDT
UTC: 2021-10-12 19:05:08 UTC
Depth: 67.4 km (41.9 mi), shallow
Epicenter: 56.408° N, 156.544° 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: 180

Nearest places

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

Naknek, AlaskaPopulation 544. Forecast259 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 131 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 131.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021d3ni8e3 (also filed as us6000fu25). Read Wed, Sep 23, 2026, 5:41 AM UTC.