Alaska earthquakes

M3.9 earthquake 163 km ESE of Akutan, Alaska

A magnitude 3.9 earthquake struck 163 km ESE of Akutan, Alaska on Mon, May 28, 2018, 3:04 AM AKDT (11:04 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.3 152 km ESE of Akutan, Alaska. This one was a foreshock.

Akutan forecast More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.9 (mb), minor
Local time: Mon, May 28, 2018, 3:04 AM AKDT
UTC: 2018-05-28 11:04:17 UTC
Depth: 15.8 km (9.8 mi), shallow
Epicenter: 53.375° N, 163.663° 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 5.0 km horizontally, 7.7 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 210°, poorly surrounded by stations
Stations used: 148

Nearest places

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

Akutan, AlaskaPopulation 1,040. Forecast163 kmESE

Nearby

Within 100 km, magnitude 1.5 and up: 99 in the 60 days after this one and 79 in the 30 days before it.

After

The first 60 of 99.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000edbr (also filed as ak19677516, ak0186sy415x). Read Wed, Sep 30, 2026, 7:30 PM UTC.