Alaska earthquakes

M3.3 earthquake 208 km SE of Chiniak, Alaska

A magnitude 3.3 earthquake struck 208 km SE of Chiniak, Alaska on Thu, Jan 25, 2018, 7:36 PM AKST (04:36 UTC), 30 km (18 mi) below the surface.

A larger quake followed: M5.1 233 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: 3.3 (ml), minor
Local time: Thu, Jan 25, 2018, 7:36 PM AKST
UTC: 2018-01-26 04:36:42 UTC
Depth: 29.6 km (18.4 mi), shallow
Epicenter: 56.179° N, 150.067° 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 9.4 km horizontally, 15.6 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 210°, poorly surrounded by stations
Stations used: 34

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 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000crb4 (also filed as ak18241926, ak018172kkjb). Read Mon, Sep 28, 2026, 4:07 PM UTC.