Alaska earthquakes

M2.0 earthquake 137 km WSW of Adak, Alaska

A magnitude 2.0 earthquake struck 137 km WSW of Adak, Alaska on Wed, Mar 21, 2018, 12:11 AM HADT (09:11 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M4.5 208 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.0 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Wed, Mar 21, 2018, 12:11 AM HADT
UTC: 2018-03-21 09:11:01 UTC
Depth: 25.6 km (15.9 mi), shallow
Epicenter: 51.425° N, 178.492° 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: 14

Nearby

Within 100 km, magnitude 1.5 and up: 86 in the 60 days after this one and 86 in the 30 days before it.

After

The first 60 of 86.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0183ogf0wt (also filed as ak18824952). Read Fri, Oct 2, 2026, 11:24 AM UTC.