Alaska earthquakes

M2.9 earthquake 67 km ESE of Atka, Alaska

A magnitude 2.9 earthquake struck 67 km ESE of Atka, Alaska on Thu, Feb 25, 2021, 11:15 AM HAST (21:15 UTC), 54 km (34 mi) below the surface.

A larger quake followed: M4.2 66 km SSW 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: 2.9 (ml), micro
Local time: Thu, Feb 25, 2021, 11:15 AM HAST
UTC: 2021-02-25 21:15:28 UTC
Depth: 54.4 km (33.8 mi), shallow
Epicenter: 51.916° N, 173.330° 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 10.5 km horizontally, 22.9 km in depth
Magnitude uncertainty: ±0.14
Depth from: From location
Station coverage gap: 315°, poorly surrounded by stations
Stations used: 22

Nearby

Within 100 km, magnitude 1.5 and up: 78 in the 60 days after this one and 29 in the 30 days before it.

After

The first 60 of 78.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ddqs (also filed as ak0212kyosmf). Read Thu, Sep 24, 2026, 4:59 AM UTC.