Alaska earthquakes

M2.1 earthquake 55 km SW of Akhiok, Alaska

A magnitude 2.1 earthquake struck 55 km SW of Akhiok, Alaska on Fri, Aug 20, 2021, 10:05 PM AKDT (06:05 UTC), 66 km (41 mi) below the surface.

A larger quake followed: M3.5 105 km WSW of Akhiok, Alaska. This one was a foreshock.

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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: Fri, Aug 20, 2021, 10:05 PM AKDT
UTC: 2021-08-21 06:05:22 UTC
Depth: 65.6 km (40.8 mi), shallow
Epicenter: 56.563° N, 154.742° 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: 23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 63 in the 60 days after this one and 33 in the 30 days before it.

After

The first 60 of 63.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021apftl2s (also filed as us6000f98s). Read Mon, Sep 28, 2026, 3:45 PM UTC.