Alaska earthquakes

M2.5 earthquake 78 km S of False Pass, Alaska

A magnitude 2.5 earthquake struck 78 km S of False Pass, Alaska on Sat, Dec 11, 2021, 11:03 AM AKST (20:03 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M2.7 89 km SSE of False Pass, 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: 2.5 (ml), micro
Local time: Sat, Dec 11, 2021, 11:03 AM AKST
UTC: 2021-12-11 20:03:48 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 54.148° N, 163.488° 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 2.2 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.15
Depth from: Operator assigned
Station coverage gap: 219°, poorly surrounded by stations
Stations used: 18

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast126 kmSW

Nearby

Within 100 km, magnitude 1.5 and up: 150 in the 60 days after this one and 48 in the 30 days before it.

After

The first 60 of 150.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000gbfk (also filed as ak021fuwc5bc). Read Wed, Sep 23, 2026, 7:01 AM UTC.