Alaska earthquakes

M1.8 earthquake 88 km W of Adak, Alaska

A magnitude 1.8 earthquake struck 88 km W of Adak, Alaska on Thu, Aug 6, 2020, 12:27 AM HADT (09:27 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: 1.8 (ml), micro
Local time: Thu, Aug 6, 2020, 12:27 AM HADT
UTC: 2020-08-06 09:27:45 UTC
Depth: 6.3 km (3.9 mi), shallow
Epicenter: 51.852° N, 177.915° 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: 16

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 100 in the 30 days before it.

After

The first 60 of 173.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020a2c7sk2 (also filed as av91108446). Read Wed, Sep 30, 2026, 4:07 AM UTC.