Alaska earthquakes

M3.0 earthquake 140 km SE of Perryville, Alaska

A magnitude 3.0 earthquake struck 140 km SE of Perryville, Alaska on Tue, Aug 17, 2021, 1:13 AM AKDT (09:13 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M3.7 209 km SE of Perryville, 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: 3.0 (ml), minor
Local time: Tue, Aug 17, 2021, 1:13 AM AKDT
UTC: 2021-08-17 09:13:50 UTC
Depth: 25.6 km (15.9 mi), shallow
Epicenter: 55.037° N, 157.548° 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: 49

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast190 kmE

Nearby

Within 100 km, magnitude 1.5 and up: 164 in the 60 days after this one and 35 in the 30 days before it.

After

The first 60 of 164.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021aivi9x8 (also filed as us7000f4dc). Read Tue, Sep 22, 2026, 8:52 PM UTC.