M3.1 earthquake 257 km SE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 257 km SE of Chiniak, Alaska on Tue, Oct 26, 2021, 8:46 PM AKDT (04:46 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.2 224 km SSE of Chiniak, 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: 29 in the 60 days after this one and 12 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak021ds7vu02. Read Wed, Sep 23, 2026, 10:18 PM UTC.