Alaska earthquakes

M2.9 earthquake 42 km SE of Atka, Alaska

A magnitude 2.9 earthquake struck 42 km SE of Atka, Alaska on Sun, Sep 13, 2020, 1:19 PM HADT (22:19 UTC), 98 km (61 mi) below the surface.

A larger quake followed: M5.3 76 km SW 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: Sun, Sep 13, 2020, 1:19 PM HADT
UTC: 2020-09-13 22:19:39 UTC
Depth: 98.4 km (61.2 mi), intermediate-depth
Epicenter: 51.909° N, 173.803° 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 15.5 km horizontally, 20.4 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 202°, poorly surrounded by stations
Stations used: 35

Nearby

Within 100 km, magnitude 1.5 and up: 80 in the 60 days after this one and 33 in the 30 days before it.

After

The first 60 of 80.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c05v (also filed as ak020btebuu7). Read Mon, Sep 28, 2026, 7:11 AM UTC.