Alaska earthquakes

M2.5 earthquake 138 km SE of Chignik, Alaska

A magnitude 2.5 earthquake struck 138 km SE of Chignik, Alaska on Fri, Aug 20, 2021, 4:47 AM AKDT (12:47 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M2.6 158 km SSW of Akhiok, Alaska. This one was a foreshock.

Sand Point forecast More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude: 2.5 (ml), micro
Local time: Fri, Aug 20, 2021, 4:47 AM AKDT
UTC: 2021-08-20 12:47:16 UTC
Depth: 23.5 km (14.6 mi), shallow
Epicenter: 55.482° N, 156.718° 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: 21

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast239 kmE

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.

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021anw3trr (also filed as us7000f6kt). Read Tue, Sep 22, 2026, 5:14 PM UTC.