Alaska earthquakes

M2.9 earthquake 83 km NNE of Atka, Alaska

A magnitude 2.9 earthquake struck 83 km NNE of Atka, Alaska on Sun, Mar 7, 2021, 2:05 AM HAST (12:05 UTC), 234 km (145 mi) below the surface.

A larger quake followed: M3.2 121 km NE of Atka, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Sun, Mar 7, 2021, 2:05 AM HAST
UTC: 2021-03-07 12:05:12 UTC
Depth: 233.8 km (145.3 mi), intermediate-depth
Epicenter: 52.900° N, 173.763° 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 43.5 km horizontally, 36.7 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 308°, poorly surrounded by stations
Stations used: 20

Nearby

Within 100 km, magnitude 1.5 and up: 35 in the 60 days after this one and 12 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dwvj (also filed as ak02131cn7pm). Read Thu, Sep 24, 2026, 10:09 AM UTC.