Alaska earthquakes

M2.8 earthquake 92 km SSE of Ugashik, Alaska

A magnitude 2.8 earthquake struck 92 km SSE of Ugashik, Alaska on Fri, Sep 17, 2021, 4:03 PM AKDT (00:03 UTC), 41 km (25 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M3.0 119 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: 2.8 (ml), micro
Local time: Fri, Sep 17, 2021, 4:03 PM AKDT
UTC: 2021-09-18 00:03:13 UTC
Depth: 40.6 km (25.2 mi), shallow
Epicenter: 56.699° N, 157.062° W
Region: Alaska
Tsunami flag: No
Status: Automatic solution, may be revised

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Stations used: 8

Nearest places

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

Naknek, AlaskaPopulation 544. Forecast226 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 175 in the 60 days after this one and 24 in the 30 days before it.

After

The first 60 of 175.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bzna93v (also filed as us7000fca2). Read Tue, Sep 22, 2026, 8:42 PM UTC.