M2.3 earthquake 94 km SW of Karluk, Alaska

A magnitude 2.3 earthquake struck 94 km SW of Karluk, Alaska on Sun, Sep 19, 2021, 6:57 PM AKDT (02:57 UTC), 75 km (47 mi) below the surface.

A larger quake followed: M3.6 115 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: 173 in the 60 days after this one and 63 in the 30 days before it.

The first 60 of 173.

From the USGS Earthquake Hazards Program and its partner networks, event ak021c2zvga0. Read Sun, Sep 27, 2026, 4:59 AM UTC.