Alaska earthquakes

M2.8 earthquake 53 km SSE of Atka, Alaska

A magnitude 2.8 earthquake struck 53 km SSE of Atka, Alaska on Mon, Mar 8, 2021, 5:38 PM HAST (03:38 UTC), 159 km (99 mi) below the surface.

A larger quake followed: M3.1 81 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: 2.8 (ml), micro
Local time: Mon, Mar 8, 2021, 5:38 PM HAST
UTC: 2021-03-09 03:38:32 UTC
Depth: 159.2 km (98.9 mi), intermediate-depth
Epicenter: 51.728° N, 174.029° 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 13.4 km horizontally, 15.9 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 212°, poorly surrounded by stations
Stations used: 26

Nearby

Within 100 km, magnitude 1.5 and up: 105 in the 60 days after this one and 49 in the 30 days before it.

After

The first 60 of 105.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dxve (also filed as ak02134ik4wb). Read Thu, Sep 24, 2026, 9:21 AM UTC.