Alaska earthquakes

M2.7 earthquake 83 km W of Adak, Alaska

A magnitude 2.7 earthquake struck 83 km W of Adak, Alaska on Sun, Jan 24, 2021, 5:09 PM HAST (03:09 UTC), 108 km (67 mi) below the surface.

A larger quake followed: M4.1 71 km SSW 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: 2.7 (ml), micro
Local time: Sun, Jan 24, 2021, 5:09 PM HAST
UTC: 2021-01-25 03:09:12 UTC
Depth: 108.1 km (67.2 mi), intermediate-depth
Epicenter: 51.810° N, 177.836° 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 12.1 km horizontally, 6.6 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 152°
Stations used: 27

Nearby

Within 100 km, magnitude 1.5 and up: 142 in the 60 days after this one and 60 in the 30 days before it.

After

The first 60 of 142.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dez5 (also filed as ak02115e9xoo). Read Thu, Sep 24, 2026, 3:38 PM UTC.