M3.6 earthquake 8 km E of Point MacKenzie, Alaska

A magnitude 3.6 earthquake struck 8 km E of Point MacKenzie, Alaska on Tue, Oct 18, 2022, 2:24 AM AKDT (10:24 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M4.9 10 km W of Point MacKenzie, 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
3.6	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.8	Mwr, regional moment	USGS National Earthquake Information Center	Reviewed · ±0.054 · 33 stations

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

135 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 114 in the 30 days before it.

The first 60 of 195.

From the USGS Earthquake Hazards Program and its partner networks, event ak022ddfhisv (also filed as us6000iui0). Read Sun, Oct 4, 2026, 4:32 PM UTC.