Alaska earthquakes

M2.9 earthquake 84 km E of Adak, Alaska

A magnitude 2.9 earthquake struck 84 km E of Adak, Alaska on Wed, May 26, 2021, 2:50 AM HADT (11:50 UTC), 238 km (148 mi) below the surface.

A larger quake followed: M3.2 103 km ESE of Adak, 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: 2.9 (ml), micro
Local time: Wed, May 26, 2021, 2:50 AM HADT
UTC: 2021-05-26 11:50:10 UTC
Depth: 238.4 km (148.1 mi), intermediate-depth
Epicenter: 51.932° N, 175.411° 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 13.0 km horizontally, 5.4 km in depth
Magnitude uncertainty: ±0.15
Depth from: From location
Station coverage gap: 196°, poorly surrounded by stations
Stations used: 30

Nearby

Within 100 km, magnitude 1.5 and up: 113 in the 60 days after this one and 28 in the 30 days before it.

After

The first 60 of 113.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000eetn (also filed as ak0216pnb7dp). Read Thu, Sep 24, 2026, 9:43 AM UTC.