Alaska earthquakes

M2.0 earthquake 147 km S of Unalaska, Alaska

A magnitude 2.0 earthquake struck 147 km S of Unalaska, Alaska on Wed, Aug 22, 2018, 7:27 PM AKDT (03:27 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M4.2 69 km E of Nikolski, 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: 2.0 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Wed, Aug 22, 2018, 7:27 PM AKDT
UTC: 2018-08-23 03:27:40 UTC
Depth: 17.9 km (11.1 mi), shallow
Epicenter: 52.550° N, 166.637° 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.

Stations used: 15

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast147 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 45 in the 60 days after this one and 18 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018asp8qab (also filed as ak20156242). Read Thu, Oct 1, 2026, 11:23 AM UTC.