Alaska earthquakes

M3.2 earthquake 121 km NE of Atka, Alaska

A magnitude 3.2 earthquake struck 121 km NE of Atka, Alaska on Sat, Mar 13, 2021, 3:08 AM HAST (13:08 UTC), 195 km (121 mi) below the surface.

A larger quake followed: M3.9 112 km ENE of Atka, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 3.2 (ml), minor
Local time: Sat, Mar 13, 2021, 3:08 AM HAST
UTC: 2021-03-13 13:08:43 UTC
Depth: 195.3 km (121.3 mi), intermediate-depth
Epicenter: 52.815° N, 172.719° 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 27.9 km horizontally, 19.0 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 173°
Stations used: 24

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 6 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 us6000dyll (also filed as ak0213bahfo8). Read Thu, Sep 24, 2026, 4:59 AM UTC.