M3.4 earthquake 113 km SE of Ugashik, Alaska

A magnitude 3.4 earthquake struck 113 km SE of Ugashik, Alaska on Sun, Jan 3, 2021, 3:01 PM AKST (00:01 UTC), 75 km (47 mi) below the surface.

A larger quake followed: M5.3 57 km WNW of Akhiok, 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: 106 in the 60 days after this one and 19 in the 30 days before it.

The first 60 of 106.

From the USGS Earthquake Hazards Program and its partner networks, event ak0216m5oi5 (also filed as us6000d5c0). Read Wed, Sep 30, 2026, 7:49 PM UTC.