Alaska earthquakes

M2.4 earthquake 22 km W of Nikiski, Alaska

A magnitude 2.4 earthquake struck 22 km W of Nikiski, Alaska on Mon, Aug 16, 2021, 1:27 PM AKDT (21:27 UTC), 73 km (46 mi) below the surface.

A larger quake followed: M3.9 5 km SSW of Kasilof, Alaska. This one was a foreshock.

Nikiski forecast More in Alaska

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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: 2.4 (ml), micro
Local time: Mon, Aug 16, 2021, 1:27 PM AKDT
UTC: 2021-08-16 21:27:33 UTC
Depth: 73.4 km (45.6 mi), intermediate-depth
Epicenter: 60.692° N, 151.698° 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: 126

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 135 in the 30 days before it.

After

The first 60 of 195.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021ahf734t (also filed as us6000f78b). Read Mon, Sep 28, 2026, 12:27 PM UTC.