Alaska earthquakes

M2.1 earthquake 104 km S of Atka, Alaska

A magnitude 2.1 earthquake struck 104 km S of Atka, Alaska on Thu, Mar 1, 2018, 2:49 AM HAST (12:49 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.6 48 km SW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.1 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Thu, Mar 1, 2018, 2:49 AM HAST
UTC: 2018-03-01 12:49:47 UTC
Depth: 12.9 km (8.0 mi), shallow
Epicenter: 51.265° N, 174.351° 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.

Stations used: 11

Nearby

Within 100 km, magnitude 1.5 and up: 61 in the 60 days after this one and 39 in the 30 days before it.

After

The first 60 of 61.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0182rfomm7 (also filed as ak18636636). Read Thu, Oct 1, 2026, 11:41 PM UTC.