Alaska earthquakes

M2.3 earthquake 59 km SE of Ugashik, Alaska

A magnitude 2.3 earthquake struck 59 km SE of Ugashik, Alaska on Wed, Aug 4, 2021, 6:00 PM AKDT (02:00 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.0 81 km ENE 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, Aug 4, 2021, 6:00 PM AKDT
UTC: 2021-08-05 02:00:13 UTC
Depth: 8.3 km (5.2 mi), shallow
Epicenter: 57.186° N, 156.605° 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: 34

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 118 in the 60 days after this one and 65 in the 30 days before it.

After

The first 60 of 118.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0219ywt7lp (also filed as us6000f2bp). Read Mon, Sep 28, 2026, 6:19 AM UTC.