Alaska earthquakes

M3.2 earthquake 8 km WNW of Atka, Alaska

A magnitude 3.2 earthquake struck 8 km WNW of Atka, Alaska on Mon, Aug 31, 2020, 3:28 AM HADT (12:28 UTC), 195 km (121 mi) below the surface.

A larger quake followed: M5.3 76 km SW of Atka, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude: 3.2 (mb), minor
Local time: Mon, Aug 31, 2020, 3:28 AM HADT
UTC: 2020-08-31 12:28:06 UTC
Depth: 195.1 km (121.2 mi), intermediate-depth
Epicenter: 52.214° N, 174.327° 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 9.0 km horizontally, 6.2 km in depth
Magnitude uncertainty: ±0.34
Depth from: From location
Station coverage gap: 157°
Stations used: 42

Nearby

Within 100 km, magnitude 1.5 and up: 93 in the 60 days after this one and 60 in the 30 days before it.

After

The first 60 of 93.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000bf8f (also filed as ak020b7qfwg7). Read Mon, Sep 28, 2026, 12:09 PM UTC.