Alaska earthquakes

M1.6 earthquake 39 km ENE of Adak, Alaska

A magnitude 1.6 earthquake struck 39 km ENE of Adak, Alaska on Fri, Feb 28, 2020, 11:14 PM HAST (09:14 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.8 103 km NNE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.6 (ml), micro
Local time: Fri, Feb 28, 2020, 11:14 PM HAST
UTC: 2020-02-29 09:14:33 UTC
Depth: 5.1 km (3.2 mi), shallow
Epicenter: 52.048° N, 176.137° 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: 17

Nearby

Within 100 km, magnitude 1.5 and up: 143 in the 60 days after this one and 78 in the 30 days before it.

After

The first 60 of 143.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0202rdospd (also filed as av70873984). Read Wed, Sep 30, 2026, 10:34 AM UTC.