Alaska earthquakes

M3.0 earthquake 130 km SSE of Perryville, Alaska

A magnitude 3.0 earthquake struck 130 km SSE of Perryville, Alaska on Sun, Oct 31, 2021, 9:38 AM AKDT (17:38 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.3 111 km SSE of Sand Point, 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: Sun, Oct 31, 2021, 9:38 AM AKDT
UTC: 2021-10-31 17:38:08 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 54.795° N, 158.529° 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.

Location uncertainty: About 3.6 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.09
Depth from: Operator assigned
Station coverage gap: 242°, poorly surrounded by stations
Stations used: 20

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast139 kmESE

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 us6000g7qs (also filed as ak021dz1q1ir). Read Tue, Sep 22, 2026, 9:24 PM UTC.