Alaska earthquakes

M3.3 earthquake 277 km SE of Chiniak, Alaska

A magnitude 3.3 earthquake struck 277 km SE of Chiniak, Alaska on Wed, Jan 24, 2018, 7:39 AM AKST (16:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.3 254 km SE of Chiniak, Alaska. This one was a foreshock.

Kodiak forecast More in Alaska

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, 7:39 AM AKST
UTC: 2018-01-24 16:39:31 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 55.752° N, 149.274° 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 9.2 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.08
Depth from: Operator assigned
Station coverage gap: 243°, poorly surrounded by stations
Stations used: 54

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast296 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000cf43 (also filed as ak18300264, ak01813ynpax). Read Mon, Sep 28, 2026, 4:18 PM UTC.