M2.0 earthquake 82 km SW of Unalaska, Alaska

A magnitude 2.0 earthquake struck 82 km SW of Unalaska, Alaska on Wed, Oct 13, 2021, 5:37 PM AKDT (01:37 UTC), 73 km (45 mi) below the surface.

A larger quake followed: M2.8 82 km S of Unalaska, 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: 84 in the 60 days after this one and 31 in the 30 days before it.

The first 60 of 84.

From the USGS Earthquake Hazards Program and its partner networks, event ak021d6o21e1. Read Wed, Sep 23, 2026, 3:41 PM UTC.