M2.1 earthquake 101 km SE of Ugashik, Alaska

A magnitude 2.1 earthquake struck 101 km SE of Ugashik, Alaska on Tue, Sep 28, 2021, 11:02 PM AKDT (07:02 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M6.9 112 km E of Chignik, 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: at least 199 in the 60 days after this one and 45 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event ak021chycw5y. Read Thu, Oct 1, 2026, 11:32 AM UTC.