Alaska earthquakes

M2.6 earthquake 180 km SSE of Atka, Alaska

A magnitude 2.6 earthquake struck 180 km SSE of Atka, Alaska on Mon, Dec 28, 2020, 2:16 PM HAST (00:16 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.9 91 km S of Atka, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude: 2.6 (ml), micro
Local time: Mon, Dec 28, 2020, 2:16 PM HAST
UTC: 2020-12-29 00:16:20 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 50.616° N, 173.624° 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 8.2 km horizontally, 9.1 km in depth
Depth from: From location
Station coverage gap: 304°, poorly surrounded by stations
Stations used: 12

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 6 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 us6000d7j2 (also filed as ak020gpzpsqm). Read Sat, Sep 26, 2026, 10:51 AM UTC.