Alaska earthquakes

M3.4 earthquake 24 km S of False Pass, Alaska

A magnitude 3.4 earthquake struck 24 km S of False Pass, Alaska on Fri, Dec 31, 2021, 2:10 PM AKST (23:10 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M4.0 Unimak Island region, Alaska. This one was a foreshock.

King Cove 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: 3.4 (mb), minor
Local time: Fri, Dec 31, 2021, 2:10 PM AKST
UTC: 2021-12-31 23:10:35 UTC
Depth: 20.0 km (12.4 mi), shallow
Epicenter: 54.632° N, 163.376° 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 5.8 km horizontally, 8.6 km in depth
Magnitude uncertainty: ±0.22
Depth from: From location
Station coverage gap: 165°
Stations used: 28

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast83 kmSW

Nearby

Within 100 km, magnitude 1.5 and up: 149 in the 60 days after this one and 41 in the 30 days before it.

After

The first 60 of 149.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000gazr (also filed as ak021gs0wuvh). Read Thu, Sep 24, 2026, 11:31 AM UTC.