Alaska earthquakes

M2.9 earthquake 49 km SW of Atka, Alaska

A magnitude 2.9 earthquake struck 49 km SW of Atka, Alaska on Tue, Nov 16, 2021, 2:38 AM HAST (12:38 UTC), 72 km (45 mi) below the surface.

A larger quake followed: M3.3 46 km S of Atka, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude: 2.9 (ml), micro
Local time: Tue, Nov 16, 2021, 2:38 AM HAST
UTC: 2021-11-16 12:38:57 UTC
Depth: 71.7 km (44.5 mi), intermediate-depth
Epicenter: 51.842° N, 174.648° 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 9.4 km horizontally, 24.4 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 208°, poorly surrounded by stations
Stations used: 31

Nearby

Within 100 km, magnitude 1.5 and up: 78 in the 60 days after this one and 47 in the 30 days before it.

After

The first 60 of 78.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000fukp (also filed as ak021epfcmor). Read Thu, Sep 24, 2026, 5:29 AM UTC.