Alaska earthquakes

M2.5 earthquake 97 km SW of Atka, Alaska

A magnitude 2.5 earthquake struck 97 km SW of Atka, Alaska on Sun, Jan 24, 2021, 5:47 PM HAST (03:47 UTC), 71 km (44 mi) below the surface.

A larger quake followed: M2.8 96 km SSE of Adak, 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: 2.5 (ml), micro
Local time: Sun, Jan 24, 2021, 5:47 PM HAST
UTC: 2021-01-25 03:47:44 UTC
Depth: 71.3 km (44.3 mi), intermediate-depth
Epicenter: 51.567° N, 175.195° 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 9.8 km horizontally, 22.8 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 240°, poorly surrounded by stations
Stations used: 18

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 67 in the 30 days before it.

After

The first 60 of 127.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dezg (also filed as ak02115ei5cc). Read Thu, Sep 24, 2026, 9:38 AM UTC.