Alaska earthquakes

M2.0 earthquake 98 km SE of Ugashik, Alaska

A magnitude 2.0 earthquake struck 98 km SE of Ugashik, Alaska on Mon, Oct 4, 2021, 3:06 AM AKDT (11:06 UTC), 59 km (36 mi) below the surface.

A larger quake followed: M3.0 117 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: 2.0 (ml), micro
Local time: Mon, Oct 4, 2021, 3:06 AM AKDT
UTC: 2021-10-04 11:06:33 UTC
Depth: 58.5 km (36.4 mi), shallow
Epicenter: 56.866° N, 156.297° 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: 204

Nearest places

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

Naknek, AlaskaPopulation 544. Forecast211 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021cqag99v (also filed as us6000frja). Read Tue, Sep 22, 2026, 9:24 PM UTC.