Alaska earthquakes

M2.2 earthquake 66 km S of Unalaska, Alaska

A magnitude 2.2 earthquake struck 66 km S of Unalaska, Alaska on Sun, Mar 4, 2018, 1:38 AM AKST (10:38 UTC), 45 km (28 mi) below the surface.

A larger quake followed: M4.5 96 km SSE of Akutan, 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: 2.2 (ml), micro
Local time: Sun, Mar 4, 2018, 1:38 AM AKST
UTC: 2018-03-04 10:38:38 UTC
Depth: 44.5 km (27.7 mi), shallow
Epicenter: 53.273° N, 166.564° 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: 23

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast67 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 101 in the 60 days after this one and 38 in the 30 days before it.

After

The first 60 of 101.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0182wd1fce (also filed as ak18582065). Read Thu, Oct 1, 2026, 12:45 AM UTC.