M3.4 earthquake 86 km NW of Karluk, Alaska

A magnitude 3.4 earthquake struck 86 km NW of Karluk, Alaska on Thu, Mar 10, 2022, 6:37 AM AKST (15:37 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.8 78 km ESE of Egegik, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.4	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.5	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.04 · 82 stations

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

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: 114 in the 60 days after this one and 35 in the 30 days before it.

The first 60 of 114.

From the USGS Earthquake Hazards Program and its partner networks, event ak02236d8gtv (also filed as us6000h3kf). Read Mon, Oct 5, 2026, 8:30 AM UTC.