Alaska earthquakes

M2.1 earthquake 137 km S of Unalaska, Alaska

A magnitude 2.1 earthquake struck 137 km S of Unalaska, Alaska on Thu, Dec 7, 2017, 9:13 AM AKST (18:13 UTC), 25 km (16 mi) below the surface.

A larger quake followed: M4.9 143 km SE of Nikolski, Alaska. This one was a foreshock.

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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
UTC
2017-12-07 18:13:16 UTC
Depth
25.1 km (15.6 mi), shallow
Epicenter
52.644° N, 166.295° 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
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 66 in the 60 days after this one and 24 in the 30 days before it.

After

The first 60 of 66.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017fo91yu5 (also filed as ak17518563). Read Thu, Oct 1, 2026, 4:39 PM UTC.