Alaska earthquakes

M3.4 earthquake 250 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 250 km SE of Chiniak, Alaska on Wed, Jan 24, 2018, 1:52 PM AKST (22:52 UTC), 23 km (14 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: 3.4 (ml), minor
Local time: Wed, Jan 24, 2018, 1:52 PM AKST
UTC: 2018-01-24 22:52:47 UTC
Depth: 23.3 km (14.5 mi), shallow
Epicenter: 56.364° N, 148.851° 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, 10.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 206°, poorly surrounded by stations
Stations used: 74

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 us1000cej3 (also filed as ak18193238, ak018142b4cm). Read Mon, Sep 28, 2026, 4:23 PM UTC.