Alaska earthquakes

M1.6 earthquake 58 km W of Adak, Alaska

A magnitude 1.6 earthquake struck 58 km W of Adak, Alaska on Tue, Dec 26, 2017, 3:07 PM HAST (01:07 UTC), 72 km (45 mi) below the surface.

A larger quake followed: M5.2 22 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.6 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, Dec 26, 2017, 3:07 PM HAST
UTC: 2017-12-27 01:07:05 UTC
Depth: 71.8 km (44.6 mi), intermediate-depth
Epicenter: 51.836° N, 177.488° 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: 17

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 91 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017gl1n8a0 (also filed as ak18025180). Read Thu, Oct 1, 2026, 10:38 PM UTC.