Alaska earthquakes

M1.6 earthquake 61 km W of Adak, Alaska

A magnitude 1.6 earthquake struck 61 km W of Adak, Alaska on Sun, Jul 23, 2017, 7:36 AM HADT (16:36 UTC), 73 km (46 mi) below the surface.

A larger quake followed: M5.2 27 km ESE 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: Sun, Jul 23, 2017, 7:36 AM HADT
UTC: 2017-07-23 16:36:33 UTC
Depth: 73.4 km (45.6 mi), intermediate-depth
Epicenter: 51.840° N, 177.521° 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 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0179dndit0 (also filed as ak16368527). Read Fri, Oct 2, 2026, 12:17 PM UTC.