Alaska earthquakes

M1.6 earthquake 61 km SW of Adak, Alaska

A magnitude 1.6 earthquake struck 61 km SW of Adak, Alaska on Tue, May 23, 2017, 3:36 AM HADT (12:36 UTC), 41 km (25 mi) below the surface.

A larger quake followed: M4.8 127 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.6 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, May 23, 2017, 3:36 AM HADT
UTC: 2017-05-23 12:36:34 UTC
Depth: 41.0 km (25.5 mi), shallow
Epicenter: 51.447° N, 177.196° 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: at least 202 in the 60 days after this one and at least 200 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 ak0176kp7mcp (also filed as ak16193898). Read Fri, Oct 2, 2026, 12:26 PM UTC.