Alaska earthquakes

M1.7 earthquake 87 km W of Adak, Alaska

A magnitude 1.7 earthquake struck 87 km W of Adak, Alaska on Thu, Aug 6, 2020, 3:27 AM HADT (12:27 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.6 125 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.7 (ml), micro
Local time: Thu, Aug 6, 2020, 3:27 AM HADT
UTC: 2020-08-06 12:27:58 UTC
Depth: 6.4 km (4.0 mi), shallow
Epicenter: 51.852° N, 177.897° 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: 170 in the 60 days after this one and 103 in the 30 days before it.

After

The first 60 of 170.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020a2e04c9 (also filed as av91108501). Read Tue, Sep 29, 2026, 12:23 AM UTC.