Alaska earthquakes

M3.2 earthquake 266 km ESE of Chiniak, Alaska

A magnitude 3.2 earthquake struck 266 km ESE of Chiniak, Alaska on Wed, Apr 18, 2018, 12:51 AM AKDT (08:51 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M3.8 284 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: 3.2 (ml), minor
Local time: Wed, Apr 18, 2018, 12:51 AM AKDT
UTC: 2018-04-18 08:51:30 UTC
Depth: 20.0 km (12.4 mi), shallow
Epicenter: 56.412° N, 148.491° 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 8.4 km horizontally, 10.8 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 240°, poorly surrounded by stations
Stations used: 27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dpqz (also filed as ak19248027, ak0184yr3ybt). Read Tue, Sep 22, 2026, 4:11 PM UTC.