Alaska earthquakes

M3.3 earthquake 238 km SE of Chiniak, Alaska

A magnitude 3.3 earthquake struck 238 km SE of Chiniak, Alaska on Thu, Jan 25, 2018, 6:08 PM AKST (03:08 UTC), 21 km (13 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, 6:08 PM AKST
UTC: 2018-01-26 03:08:30 UTC
Depth: 20.9 km (13.0 mi), shallow
Epicenter: 56.254° N, 149.256° W
Region: Alaska
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was IX, violent shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 9.7 km horizontally, 11.1 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 224°, poorly surrounded by stations
Stations used: 55

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

After

The first 60 of at least 202.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000cray (also filed as ak018171t3vt, ak18196670). Read Mon, Sep 28, 2026, 3:02 PM UTC.