Alaska earthquakes

M2.9 earthquake 40 km SE of Unalaska, Alaska

A magnitude 2.9 earthquake struck 40 km SE of Unalaska, Alaska on Thu, Jun 28, 2018, 5:24 AM AKDT (13:24 UTC), 70 km (43 mi) below the surface.

A larger quake followed: M4.1 79 km S of Unalaska, Alaska. This one was a foreshock.

Unalaska 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: 2.9 (ml), micro
Local time: Thu, Jun 28, 2018, 5:24 AM AKDT
UTC: 2018-06-28 13:24:10 UTC
Depth: 69.7 km (43.3 mi), shallow
Epicenter: 53.625° N, 166.088° 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 11.1 km horizontally, 22.3 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 199°, poorly surrounded by stations
Stations used: 26

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast40 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 108 in the 60 days after this one and 78 in the 30 days before it.

After

The first 60 of 108.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000fqkx (also filed as ak19806869, ak0188892x8v). Read Wed, Sep 30, 2026, 5:30 PM UTC.