Alaska earthquakes

M2.7 earthquake 231 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 231 km SE of Chiniak, Alaska on Thu, May 31, 2018, 11:13 PM AKDT (07:13 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M3.8 235 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: 2.7 (ml), micro
Local time: Thu, May 31, 2018, 11:13 PM AKDT
UTC: 2018-06-01 07:13:31 UTC
Depth: 20.5 km (12.7 mi), shallow
Epicenter: 56.078° N, 149.722° 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 8.1 km horizontally, 10.3 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 198°, poorly surrounded by stations
Stations used: 31

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 us1000eqfl (also filed as ak19769727, aacse0186zhxn7t, ak0186zhxn7t). Read Mon, Sep 21, 2026, 11:22 AM UTC.