Alaska earthquakes

M2.7 earthquake 32 km S of Atka, Alaska

A magnitude 2.7 earthquake struck 32 km S of Atka, Alaska on Sun, Feb 7, 2021, 10:12 PM HAST (08:12 UTC), 76 km (47 mi) below the surface.

A larger quake followed: M3.4 98 km S of Atka, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Sun, Feb 7, 2021, 10:12 PM HAST
UTC: 2021-02-08 08:12:05 UTC
Depth: 76.3 km (47.4 mi), intermediate-depth
Epicenter: 51.901° N, 174.204° 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 12.7 km horizontally, 10.7 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 246°, poorly surrounded by stations
Stations used: 30

Nearby

Within 100 km, magnitude 1.5 and up: 109 in the 60 days after this one and 41 in the 30 days before it.

After

The first 60 of 109.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dk9a (also filed as ak0211smsl51). Read Thu, Sep 24, 2026, 7:04 AM UTC.