Alaska earthquakes

M2.3 earthquake 114 km W of Akhiok, Alaska

A magnitude 2.3 earthquake struck 114 km W of Akhiok, Alaska on Wed, Oct 20, 2021, 2:58 PM AKDT (22:58 UTC), 77 km (48 mi) below the surface.

A larger quake followed: M3.5 99 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: 2.3 (ml), micro
Local time: Wed, Oct 20, 2021, 2:58 PM AKDT
UTC: 2021-10-20 22:58:23 UTC
Depth: 76.8 km (47.7 mi), intermediate-depth
Epicenter: 56.765° N, 156.026° 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: 45

Nearest places

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

Naknek, AlaskaPopulation 544. Forecast226 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: 124 in the 60 days after this one and 139 in the 30 days before it.

After

The first 60 of 124.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021dgxwpcb (also filed as us6000g9mq). Read Wed, Sep 30, 2026, 4:30 AM UTC.