Alaska earthquakes

M2.9 earthquake 185 km SSW of Akhiok, Alaska

A magnitude 2.9 earthquake struck 185 km SSW of Akhiok, Alaska on Sat, Sep 4, 2021, 4:34 PM AKDT (00:34 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.0 242 km SE of Chignik, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Sat, Sep 4, 2021, 4:34 PM AKDT
UTC: 2021-09-05 00:34:33 UTC
Depth: 11.3 km (7.0 mi), shallow
Epicenter: 55.418° N, 155.345° 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: 62

Nearby

Within 100 km, magnitude 1.5 and up: 41 in the 60 days after this one and 64 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021be5hff3 (also filed as us7000f822). Read Wed, Sep 23, 2026, 2:38 AM UTC.