Alaska earthquakes

M3.5 earthquake 152 km SE of Perryville, Alaska

A magnitude 3.5 earthquake struck 152 km SE of Perryville, Alaska on Sat, Aug 28, 2021, 12:21 PM AKDT (20:21 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M5.6 181 km SE 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: 3.5 (ml), minor
Local time: Sat, Aug 28, 2021, 12:21 PM AKDT
UTC: 2021-08-28 20:21:47 UTC
Depth: 16.8 km (10.4 mi), shallow
Epicenter: 54.851° N, 157.615° 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: 45

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast191 kmESE

Nearby

Within 100 km, magnitude 1.5 and up: 104 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of 104.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021b190kqd (also filed as us7000f5al). Read Wed, Sep 30, 2026, 8:03 AM UTC.