Alaska earthquakes

M2.9 earthquake 72 km ENE of Adak, Alaska

A magnitude 2.9 earthquake struck 72 km ENE of Adak, Alaska on Fri, Feb 17, 2023, 11:13 AM HAST (21:13 UTC), 162 km (101 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.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Fri, Feb 17, 2023, 11:13 AM HAST
UTC: 2023-02-17 21:13:17 UTC
Depth: 162.4 km (100.9 mi), intermediate-depth
Epicenter: 52.219° N, 175.729° 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 13.5 km horizontally, 4.6 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 158°
Stations used: 15

Nearby

Within 100 km, magnitude 1.5 and up: 102 in the 60 days after this one and 49 in the 30 days before it.

After

The first 60 of 102.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000jrw5 (also filed as ak02327qdl21). Read Wed, Sep 30, 2026, 5:39 PM UTC.