M3.1 earthquake Central Alaska

A magnitude 3.1 earthquake struck in Central Alaska on Fri, Sep 30, 2022, 10:12 PM AKDT (06:12 UTC), 106 km (66 mi) below the surface.

A larger quake followed: M4.8 55 km NNE of Petersville, 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
3.1	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.3	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.025 · 210 stations

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 122 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event ak022cl8wam0 (also filed as us6000ipx9). Read Fri, Oct 2, 2026, 7:58 AM UTC.