Alaska earthquakes

M2.9 earthquake 197 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 197 km SE of Chiniak, Alaska on Tue, Jan 23, 2018, 10:22 PM AKST (07:22 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M5.3 254 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: 2.9 (ml), micro
Local time: Tue, Jan 23, 2018, 10:22 PM AKST
UTC: 2018-01-24 07:22:30 UTC
Depth: 30.0 km (18.6 mi), shallow
Epicenter: 56.279° N, 150.151° 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 10.5 km horizontally, 19.1 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 246°, poorly surrounded by stations
Stations used: 23

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 us1000cezz (also filed as ak01813t75ej, ak18300072). Read Tue, Sep 29, 2026, 2:14 AM UTC.