Alaska earthquakes

M2.6 earthquake 191 km S of Unalaska, Alaska

A magnitude 2.6 earthquake struck 191 km S of Unalaska, Alaska on Tue, Dec 26, 2023, 12:11 AM AKST (09:11 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.3 121 km S 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: 2.6 (ml), micro
Local time: Tue, Dec 26, 2023, 12:11 AM AKST
UTC: 2023-12-26 09:11:35 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 52.169° N, 166.194° 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 6.2 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.12
Depth from: Operator assigned
Station coverage gap: 250°, poorly surrounded by stations
Stations used: 21

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast191 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 55 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 us6000m40y (also filed as ak023gjiw9yv). Read Mon, Sep 28, 2026, 9:27 PM UTC.