Alaska earthquakes

M1.5 earthquake 84 km W of Adak, Alaska

A magnitude 1.5 earthquake struck 84 km W of Adak, Alaska on Wed, Mar 10, 2021, 1:11 AM HAST (11:11 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.8 154 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.5 (ml), micro
Local time: Wed, Mar 10, 2021, 1:11 AM HAST
UTC: 2021-03-10 11:11:22 UTC
Depth: 8.4 km (5.2 mi), shallow
Epicenter: 51.880° N, 177.859° 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.

Stations used: 20

Nearby

Within 100 km, magnitude 1.5 and up: 122 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of 122.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak02136ap4d8 (also filed as av91205626). Read Thu, Sep 24, 2026, 12:47 PM UTC.