Alaska earthquakes

M2.1 earthquake 100 km W of Adak, Alaska

A magnitude 2.1 earthquake struck 100 km W of Adak, Alaska on Mon, Mar 13, 2023, 12:58 AM HADT (09:58 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M4.1 150 km SW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.1 (ml), micro
Local time: Mon, Mar 13, 2023, 12:58 AM HADT
UTC: 2023-03-13 09:58:35 UTC
Depth: 5.6 km (3.5 mi), shallow
Epicenter: 51.862° N, 178.092° 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: 25

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 202.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0233b8eebu (also filed as av91802701). Read Wed, Sep 30, 2026, 11:19 PM UTC.