Alaska earthquakes

M2.5 earthquake 66 km W of Nanwalek, Alaska

A magnitude 2.5 earthquake struck 66 km W of Nanwalek, Alaska on Sat, Dec 4, 2021, 8:46 PM AKST (05:46 UTC), 86 km (53 mi) below the surface.

A larger quake followed: M5.9 58 km E of Port Alsworth, Alaska. This one was a foreshock.

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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 4, 2021, 8:46 PM AKST
UTC: 2021-12-05 05:46:54 UTC
Depth: 86.0 km (53.4 mi), intermediate-depth
Epicenter: 59.447° N, 153.073° 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: 102

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021fkqfsi6 (also filed as us6000g97f). Read Sun, Sep 27, 2026, 8:09 PM UTC.