Alaska earthquakes

M3.6 earthquake 115 km E of Chignik, Alaska

A magnitude 3.6 earthquake struck 115 km E of Chignik, Alaska on Mon, Oct 11, 2021, 9:56 AM AKDT (17:56 UTC), 46 km (29 mi) below the surface.

A larger quake followed: M4.1 114 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: 3.6 (ml), minor
Local time: Mon, Oct 11, 2021, 9:56 AM AKDT
UTC: 2021-10-11 17:56:24 UTC
Depth: 46.1 km (28.6 mi), shallow
Epicenter: 56.316° N, 156.539° 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: 138

Nearest places

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

Naknek, AlaskaPopulation 544. Forecast270 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 142 in the 60 days after this one and 57 in the 30 days before it.

After

The first 60 of 142.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021d1z2zjm (also filed as us6000ftrh). Read Tue, Sep 22, 2026, 8:36 PM UTC.