Alaska earthquakes

M2.7 earthquake 115 km SSE of Ugashik, Alaska

A magnitude 2.7 earthquake struck 115 km SSE of Ugashik, Alaska on Sat, Oct 23, 2021, 8:08 AM AKDT (16:08 UTC), 56 km (35 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: 2.7 (ml), micro
Local time: Sat, Oct 23, 2021, 8:08 AM AKDT
UTC: 2021-10-23 16:08:35 UTC
Depth: 55.7 km (34.6 mi), shallow
Epicenter: 56.584° 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: 27

Nearest places

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

Naknek, AlaskaPopulation 544. Forecast240 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 103 in the 60 days after this one and 96 in the 30 days before it.

After

The first 60 of 103.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021dlsngc0 (also filed as us6000g9nf). Read Wed, Sep 23, 2026, 12:26 AM UTC.