M1.6 earthquake Alaska Peninsula

A magnitude 1.6 earthquake struck in the Alaska Peninsula on Sat, Sep 24, 2022, 4:43 PM AKDT (00:43 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.6 89 km W of Karluk, 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
1.6	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
1.68	ML, local (Richter)	AV	Final · ±0.226298794521327 · 22 stations

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: 108 in the 60 days after this one and 39 in the 30 days before it.

The first 60 of 108.

From the USGS Earthquake Hazards Program and its partner networks, event ak022cb8ab0u (also filed as av91684476). Read Fri, Oct 2, 2026, 6:25 PM UTC.