Alaska earthquakes

M1.5 earthquake 131 km W of Adak, Alaska

A magnitude 1.5 earthquake struck 131 km W of Adak, Alaska on Tue, Jun 20, 2017, 3:03 AM HADT (12:03 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.8 138 km WSW of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 1.5 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, Jun 20, 2017, 3:03 AM HADT
UTC: 2017-06-20 12:03:03 UTC
Depth: 13.3 km (8.3 mi), shallow
Epicenter: 51.707° N, 178.521° 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: 15

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0177v0274f (also filed as ak16335723). Read Fri, Oct 2, 2026, 12:23 PM UTC.