Alaska earthquakes

M2.1 earthquake 130 km S of Unalaska, Alaska

A magnitude 2.1 earthquake struck 130 km S of Unalaska, Alaska on Tue, Apr 18, 2017, 10:44 AM AKDT (18:44 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M5.9 163 km ESE 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: 2.1 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, Apr 18, 2017, 10:44 AM AKDT
UTC: 2017-04-18 18:44:25 UTC
Depth: 9.4 km (5.8 mi), shallow
Epicenter: 52.718° N, 166.830° 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: 16

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast130 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 76 in the 60 days after this one and 38 in the 30 days before it.

After

The first 60 of 76.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0174yx0rnu (also filed as ak15789006). Read Mon, Oct 5, 2026, 12:19 AM UTC.