Alaska earthquakes

M3.1 earthquake 230 km SE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 230 km SE of Chiniak, Alaska on Fri, Dec 21, 2018, 3:56 PM AKST (00:56 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.2 273 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: 3.1 (ml), minor
Local time: Fri, Dec 21, 2018, 3:56 PM AKST
UTC: 2018-12-22 00:56:53 UTC
Depth: 4.5 km (2.8 mi), shallow
Epicenter: 56.423° N, 149.166° 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: 37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 159 in the 60 days after this one and 40 in the 30 days before it.

After

The first 60 of 159.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018gcrno13 (also filed as aacse018gcrno13). Read Tue, Sep 22, 2026, 8:01 AM UTC.