Alaska earthquakes

M2.9 earthquake 7 km N of Nikolski, Alaska

A magnitude 2.9 earthquake struck 7 km N of Nikolski, Alaska on Sun, Apr 11, 2021, 6:37 AM AKDT (14:37 UTC), 70 km (44 mi) below the surface.

A larger quake followed: M3.6 53 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: 2.9 (ml), micro
Local time: Sun, Apr 11, 2021, 6:37 AM AKDT
UTC: 2021-04-11 14:37:56 UTC
Depth: 70.3 km (43.7 mi), intermediate-depth
Epicenter: 53.004° N, 168.842° 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.

Location uncertainty: About 13.4 km horizontally, 6.7 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 192°, poorly surrounded by stations
Stations used: 17

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast181 kmWSW

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 33 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 us7000e0gh (also filed as ak0214n9u63k). Read Mon, Sep 28, 2026, 1:43 PM UTC.