Alaska earthquakes

M2.8 earthquake 117 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 117 km SE of Chiniak, Alaska on Tue, Dec 21, 2021, 7:35 AM AKST (16:35 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.0 191 km ESE of Chiniak, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Tue, Dec 21, 2021, 7:35 AM AKST
UTC: 2021-12-21 16:35:35 UTC
Depth: 4.4 km (2.7 mi), shallow
Epicenter: 56.984° N, 150.706° 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.

Stations used: 80

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 2 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 ak021gbdipuu (also filed as us6000ge6f). Read Wed, Sep 23, 2026, 1:12 PM UTC.