Alaska earthquakes

M2.9 earthquake 225 km SW of Adak, Alaska

A magnitude 2.9 earthquake struck 225 km SW of Adak, Alaska on Thu, Apr 6, 2023, 7:02 AM HADT (16:02 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 150 km SW 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: 2.9 (ml), micro
Local time: Thu, Apr 6, 2023, 7:02 AM HADT
UTC: 2023-04-06 16:02:43 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 50.231° N, 178.522° 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 4.0 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.09
Depth from: Operator assigned
Station coverage gap: 248°, poorly surrounded by stations
Stations used: 23

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 4 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000k3x2 (also filed as ak0234f14s1f). Read Wed, Sep 30, 2026, 7:52 AM UTC.