Alaska earthquakes

M2.5 earthquake 41 km WNW of Nanwalek, Alaska

A magnitude 2.5 earthquake struck 41 km WNW of Nanwalek, Alaska on Sat, Nov 20, 2021, 11:49 PM AKST (08:49 UTC), 72 km (45 mi) below the surface.

A larger quake followed: M2.7 69 km E of Port Alsworth, 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: 2.5 (ml), micro
Local time: Sat, Nov 20, 2021, 11:49 PM AKST
UTC: 2021-11-21 08:49:38 UTC
Depth: 72.1 km (44.8 mi), intermediate-depth
Epicenter: 59.475° N, 152.609° 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: 132

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021exmpucb (also filed as us7000fvx3). Read Thu, Sep 24, 2026, 4:52 AM UTC.