Alaska earthquakes

M3.2 earthquake 239 km SE of Chiniak, Alaska

A magnitude 3.2 earthquake struck 239 km SE of Chiniak, Alaska on Sun, Dec 6, 2020, 8:15 AM AKST (17:15 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M4.5 245 km SE 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: 3.2 (ml), minor
Local time: Sun, Dec 6, 2020, 8:15 AM AKST
UTC: 2020-12-06 17:15:20 UTC
Depth: 21.3 km (13.2 mi), shallow
Epicenter: 56.235° N, 149.267° 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 8.7 km horizontally, 11.0 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 236°, poorly surrounded by stations
Stations used: 19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 11 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000cqpf (also filed as ak020fo8gz75). Read Sun, Sep 27, 2026, 3:17 AM UTC.