Alaska earthquakes

M3.1 earthquake 80 km SW of Atka, Alaska

A magnitude 3.1 earthquake struck 80 km SW of Atka, Alaska on Thu, Feb 16, 2023, 7:27 AM HAST (17:27 UTC), 60 km (37 mi) below the surface.

A larger quake followed: M4.5 91 km ESE of Adak, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude: 3.1 (ml), minor
Local time: Thu, Feb 16, 2023, 7:27 AM HAST
UTC: 2023-02-16 17:27:01 UTC
Depth: 60.0 km (37.3 mi), shallow
Epicenter: 51.747° N, 175.111° 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 5.5 km horizontally, 6.4 km in depth
Depth from: From location
Station coverage gap: 224°, poorly surrounded by stations
Stations used: 16

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 50 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 us6000jrus (also filed as ak023260jgy0). Read Wed, Sep 30, 2026, 7:56 PM UTC.