Alaska earthquakes

M2.9 earthquake 35 km ESE of Unalaska, Alaska

A magnitude 2.9 earthquake struck 35 km ESE of Unalaska, Alaska on Tue, Dec 20, 2022, 7:41 PM AKST (04:41 UTC), 72 km (45 mi) below the surface.

A larger quake followed: M4.4 86 km SE of Akutan, 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: 2.9 (ml), micro
Local time: Tue, Dec 20, 2022, 7:41 PM AKST
UTC: 2022-12-21 04:41:29 UTC
Depth: 71.6 km (44.5 mi), intermediate-depth
Epicenter: 53.747° N, 166.047° 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 13.7 km horizontally, 21.9 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 226°, poorly surrounded by stations
Stations used: 12

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast35 kmESE

Nearby

Within 100 km, magnitude 1.5 and up: 152 in the 60 days after this one and 85 in the 30 days before it.

After

The first 60 of 152.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000j2p9 (also filed as ak022gb6esps). Read Tue, Sep 29, 2026, 12:54 PM UTC.