Alaska earthquakes

M3.3 earthquake 158 km SE of Perryville, Alaska

A magnitude 3.3 earthquake struck 158 km SE of Perryville, Alaska on Wed, Sep 8, 2021, 8:21 PM AKDT (04:21 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M5.6 181 km SE of Chignik, 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
3.3 (ml), minor
Local time
UTC
2021-09-09 04:21:37 UTC
Depth
21.2 km (13.2 mi), shallow
Epicenter
54.929° N, 157.325° 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
52

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of 62.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bktxs7t (also filed as us6000fs5f). Read Wed, Sep 30, 2026, 1:49 PM UTC.