Alaska earthquakes

M3.1 earthquake 252 km SE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 252 km SE of Chiniak, Alaska on Sun, Jul 8, 2018, 8:27 AM AKDT (16:27 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.2 225 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: 3.1 (ml), minor
Local time: Sun, Jul 8, 2018, 8:27 AM AKDT
UTC: 2018-07-08 16:27:20 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.098° N, 149.203° 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 8.9 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.07
Depth from: Operator assigned
Station coverage gap: 212°, 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 us2000g2md (also filed as ak19857798, aacse0188ou9de3, ak0188ou9de3). Read Mon, Sep 21, 2026, 11:32 PM UTC.