Alaska earthquakes

M1.9 earthquake 38 km W of Adak, Alaska

A magnitude 1.9 earthquake struck 38 km W of Adak, Alaska on Fri, Mar 31, 2017, 9:54 PM HADT (06:54 UTC), 70 km (43 mi) below the surface.

A larger quake followed: M6.2 135 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.9 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Mar 31, 2017, 9:54 PM HADT
UTC: 2017-04-01 06:54:58 UTC
Depth: 69.7 km (43.3 mi), shallow
Epicenter: 51.813° N, 177.182° 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: 13

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and 60 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 ak01746lsvpv (also filed as ak15655547). Read Sat, Oct 3, 2026, 11:31 PM UTC.