Alaska earthquakes

M2.1 earthquake Alaska Peninsula

A magnitude 2.1 earthquake struck in the Alaska Peninsula on Mon, Aug 23, 2021, 2:15 PM AKDT (22:15 UTC), 123 km (76 mi) below the surface.

A larger quake followed: M2.4 84 km NNW of Karluk, 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: 2.1 (ml), micro
Local time: Mon, Aug 23, 2021, 2:15 PM AKDT
UTC: 2021-08-23 22:15:27 UTC
Depth: 122.6 km (76.2 mi), intermediate-depth
Epicenter: 58.856° N, 154.413° 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: 89

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 110 in the 60 days after this one and 55 in the 30 days before it.

After

The first 60 of 110.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021at0hc01 (also filed as us7000f2t2). Read Thu, Sep 24, 2026, 6:09 AM UTC.