Alaska earthquakes

M2.7 earthquake 24 km SE of Unalaska, Alaska

A magnitude 2.7 earthquake struck 24 km SE of Unalaska, Alaska on Wed, Feb 22, 2023, 7:47 PM AKST (04:47 UTC), 80 km (50 mi) below the surface.

A larger quake followed: M4.9 Fox Islands, Aleutian Islands, Alaska. This one was a foreshock.

Unalaska forecast More in Alaska

Map

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

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Wed, Feb 22, 2023, 7:47 PM AKST
UTC: 2023-02-23 04:47:45 UTC
Depth: 79.9 km (49.7 mi), intermediate-depth
Epicenter: 53.718° N, 166.278° 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 12.7 km horizontally, 18.2 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 195°, poorly surrounded by stations
Stations used: 23

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Unalaska, AlaskaPopulation 4,491. Forecast24 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 60 in the 30 days before it.

After

The first 60 of 177.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000jgnv (also filed as ak0232hdonc8). Read Wed, Sep 30, 2026, 5:47 AM UTC.