Alaska earthquakes

M2.9 earthquake 56 km NE of Atka, Alaska

A magnitude 2.9 earthquake struck 56 km NE of Atka, Alaska on Tue, Dec 29, 2020, 11:33 AM HAST (21:33 UTC), 201 km (125 mi) below the surface.

A larger quake followed: M4.4 65 km NNW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Tue, Dec 29, 2020, 11:33 AM HAST
UTC: 2020-12-29 21:33:38 UTC
Depth: 200.7 km (124.7 mi), intermediate-depth
Epicenter: 52.487° N, 173.513° 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 34.1 km horizontally, 10.1 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 170°
Stations used: 17

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and 20 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 us6000d7ji (also filed as ak020gqcbl6p). Read Mon, Sep 28, 2026, 11:04 AM UTC.