M1.8 earthquake 81 km SW of Karluk, Alaska

A magnitude 1.8 earthquake struck 81 km SW of Karluk, Alaska on Wed, Dec 15, 2021, 5:40 AM AKST (14:40 UTC), 61 km (38 mi) below the surface.

A larger quake followed: M1.9 Kodiak Island region, 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: 98 in the 60 days after this one and 50 in the 30 days before it.

The first 60 of 98.

From the USGS Earthquake Hazards Program and its partner networks, event ak021g1f4veu. Read Wed, Sep 23, 2026, 2:37 AM UTC.