Alaska earthquakes

M2.1 earthquake 156 km WSW of Adak, Alaska

A magnitude 2.1 earthquake struck 156 km WSW of Adak, Alaska on Sun, Mar 4, 2018, 4:29 AM HAST (14:29 UTC), 53 km (33 mi) below the surface.

A larger quake followed: M4.6 111 km SW of Adak, 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
UTC
2018-03-04 14:29:15 UTC
Depth
53.1 km (33.0 mi), shallow
Epicenter
51.281° N, 178.675° 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
12

Nearby

Within 100 km, magnitude 1.5 and up: 143 in the 60 days after this one and 79 in the 30 days before it.

After

The first 60 of 143.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0182wfd6ip (also filed as ak18655527). Read Fri, Oct 2, 2026, 9:54 AM UTC.