Alaska earthquakes

M4.1 earthquake 229 km SE of Chiniak, Alaska

A magnitude 4.1 earthquake struck 229 km SE of Chiniak, Alaska on Wed, Jan 24, 2018, 6:28 AM AKST (15:28 UTC), 22 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: 4.1 (mb), light
Local time: Wed, Jan 24, 2018, 6:28 AM AKST
UTC: 2018-01-24 15:28:14 UTC
Depth: 22.3 km (13.9 mi), shallow
Epicenter: 56.023° N, 149.874° 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 II, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 7.2 km horizontally, 8.7 km in depth
Magnitude uncertainty: ±0.52
Depth from: From location
Station coverage gap: 185°, poorly surrounded by stations
Stations used: 147

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 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 us2000cnru (also filed as ak01813xzve5, ak18192677). Read Tue, Sep 29, 2026, 7:01 PM UTC.