Alaska earthquakes

M2.0 earthquake 44 km SW of Adak, Alaska

A magnitude 2.0 earthquake struck 44 km SW of Adak, Alaska on Mon, Mar 20, 2017, 11:10 PM HADT (08:10 UTC), 55 km (34 mi) below the surface.

A larger quake followed: M5.9 95 km SSW 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: Mon, Mar 20, 2017, 11:10 PM HADT
UTC: 2017-03-21 08:10:20 UTC
Depth: 55.3 km (34.4 mi), shallow
Epicenter: 51.615° N, 177.123° 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: 15

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and 57 in the 30 days before it.

After

The first 60 of at least 202.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0173oftf2v (also filed as ak15568716). Read Sat, Oct 3, 2026, 12:08 AM UTC.