M2.3 earthquake 231 km SE of Old Harbor, Alaska

A magnitude 2.3 earthquake struck 231 km SE of Old Harbor, Alaska on Tue, Nov 6, 2018, 9:02 AM AKST (18:02 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.0 267 km SE 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: 63 in the 60 days after this one and 52 in the 30 days before it.

The first 60 of 63.

From the USGS Earthquake Hazards Program and its partner networks, event aacse018e8zbtmi. Read Tue, Sep 22, 2026, 8:48 PM UTC.