Alaska earthquakes

M1.6 earthquake 124 km W of Adak, Alaska

A magnitude 1.6 earthquake struck 124 km W of Adak, Alaska on Sun, Sep 5, 2021, 1:14 AM HADT (10:14 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M1.7 66 km SW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.6 (ml), micro
Local time: Sun, Sep 5, 2021, 1:14 AM HADT
UTC: 2021-09-05 10:14:03 UTC
Depth: 10.9 km (6.8 mi), shallow
Epicenter: 51.821° N, 178.435° 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: 37

Nearby

Within 100 km, magnitude 1.5 and up: 120 in the 60 days after this one and 79 in the 30 days before it.

After

The first 60 of 120.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bebbeuv (also filed as av91359571). Read Thu, Sep 24, 2026, 8:38 AM UTC.