Alaska earthquakes

M2.7 earthquake 29 km ESE of Unalaska, Alaska

A magnitude 2.7 earthquake struck 29 km ESE of Unalaska, Alaska on Fri, Mar 24, 2023, 10:05 AM AKDT (18:05 UTC), 73 km (45 mi) below the surface.

A larger quake followed: M4.9 59 km WSW of Unalaska, 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: Fri, Mar 24, 2023, 10:05 AM AKDT
UTC: 2023-03-24 18:05:42 UTC
Depth: 72.9 km (45.3 mi), intermediate-depth
Epicenter: 53.795° N, 166.106° 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 11.7 km horizontally, 22.0 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 182°, poorly surrounded by stations
Stations used: 29

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast29 kmESE

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000k0sw (also filed as ak0233tkcro0). Read Wed, Sep 30, 2026, 1:48 AM UTC.