Alaska earthquakes

M3.5 earthquake 68 km S of Atka, Alaska

A magnitude 3.5 earthquake struck 68 km S of Atka, Alaska on Mon, Nov 29, 2021, 2:13 AM HAST (12:13 UTC), 91 km (56 mi) below the surface.

A larger quake followed: M4.3 107 km SSW 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: 3.5 (ml), minor
Local time: Mon, Nov 29, 2021, 2:13 AM HAST
UTC: 2021-11-29 12:13:04 UTC
Depth: 90.7 km (56.3 mi), intermediate-depth
Epicenter: 51.586° N, 174.119° 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 8.4 km horizontally, 16.9 km in depth
Magnitude uncertainty: ±0.15
Depth from: From location
Station coverage gap: 216°, poorly surrounded by stations
Stations used: 22

Nearby

Within 100 km, magnitude 1.5 and up: 58 in the 60 days after this one and 44 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 us7000g8qe (also filed as ak021fax6kh2). Read Mon, Sep 28, 2026, 4:20 AM UTC.