M1.6 earthquake 46 km ENE of Chignik, Alaska

A magnitude 1.6 earthquake struck 46 km ENE of Chignik, Alaska on Sat, Sep 4, 2021, 12:04 AM AKDT (08:04 UTC), 65 km (40 mi) below the surface.

A larger quake followed: M2.0 80 km SE of Ugashik, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 141 in the 60 days after this one and 43 in the 30 days before it.

The first 60 of 141.

From the USGS Earthquake Hazards Program and its partner networks, event ak021bcmj4hi. Read Thu, Sep 24, 2026, 5:10 AM UTC.