Alaska earthquakes

M2.1 earthquake 79 km ESE of Nikolski, Alaska

A magnitude 2.1 earthquake struck 79 km ESE of Nikolski, Alaska on Fri, Oct 21, 2016, 11:29 AM AKDT (19:29 UTC), 50 km (31 mi) below the surface.

A larger quake followed: M3.6 81 km SSW of Unalaska, 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: Fri, Oct 21, 2016, 11:29 AM AKDT
UTC: 2016-10-21 19:29:32 UTC
Depth: 50.3 km (31.3 mi), shallow
Epicenter: 52.604° N, 167.819° 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: 12

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast165 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 42 in the 60 days after this one and 47 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 ak016dk70whd (also filed as ak14253466). Read Sat, Oct 3, 2026, 11:26 AM UTC.