Alaska earthquakes

M1.8 earthquake 125 km WSW of Adak, Alaska

A magnitude 1.8 earthquake struck 125 km WSW of Adak, Alaska on Mon, Apr 3, 2017, 10:38 PM HADT (07:38 UTC), 46 km (29 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: 1.8 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Mon, Apr 3, 2017, 10:38 PM HADT
UTC: 2017-04-04 07:38:21 UTC
Depth: 46.0 km (28.6 mi), shallow
Epicenter: 51.550° N, 178.372° 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: 18

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and 52 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 ak0174bkwuhv (also filed as ak15675616). Read Fri, Oct 2, 2026, 10:40 PM UTC.