M4.2 earthquake 162 km S of False Pass, Alaska

A magnitude 4.2 earthquake struck 162 km S of False Pass, Alaska on Sat, Oct 5, 2024, 3:34 PM AKDT (23:34 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.3 216 km SE of Akutan, 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
4.2	Mwr, regional moment	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.071 · 19 stations
3.5	ML, local (Richter)	Alaska Earthquake Center	Preliminary

No one has reported feeling this quake to the USGS.

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: 124 in the 60 days after this one and 34 in the 30 days before it.

The first 60 of 124.

From the USGS Earthquake Hazards Program and its partner networks, event us6000nwst (also filed as ak024ctsu4hs). Read Fri, Oct 2, 2026, 5:15 AM UTC.