Alaska earthquakes

M2.5 earthquake 63 km NE of Chignik, Alaska

A magnitude 2.5 earthquake struck 63 km NE of Chignik, Alaska on Wed, Aug 18, 2021, 1:21 PM AKDT (21:21 UTC), 75 km (47 mi) below the surface.

A larger quake followed: M4.0 81 km ENE of Chignik, 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.

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The earthquake

Magnitude: 2.5 (ml), micro
Local time: Wed, Aug 18, 2021, 1:21 PM AKDT
UTC: 2021-08-18 21:21:54 UTC
Depth: 75.2 km (46.7 mi), intermediate-depth
Epicenter: 56.639° N, 157.583° 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: 47

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast232 kmNE

Nearby

Within 100 km, magnitude 1.5 and up: 157 in the 60 days after this one and 42 in the 30 days before it.

After

The first 60 of 157.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021akq8jg5 (also filed as us6000f83h). Read Tue, Sep 22, 2026, 9:28 PM UTC.