Alaska earthquakes

M3.3 earthquake 246 km SE of Chiniak, Alaska

A magnitude 3.3 earthquake struck 246 km SE of Chiniak, Alaska on Wed, Jan 24, 2018, 2:43 AM AKST (11:43 UTC), 8 km (5 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: 3.3 (ml), minor
Local time: Wed, Jan 24, 2018, 2:43 AM AKST
UTC: 2018-01-24 11:43:03 UTC
Depth: 7.6 km (4.7 mi), shallow
Epicenter: 55.913° N, 149.688° 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 10.3 km horizontally, 8.3 km in depth
Magnitude uncertainty: ±0.15
Depth from: From location
Station coverage gap: 202°, poorly surrounded by stations
Stations used: 36

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 us1000cf1n (also filed as ak01813vpcaq, ak18300156). Read Tue, Sep 29, 2026, 6:21 AM UTC.