M3.6 earthquake 161 km S of False Pass, Alaska

A magnitude 3.6 earthquake struck 161 km S of False Pass, Alaska on Tue, Aug 12, 2025, 4:07 AM AKDT (12:07 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M4.0 125 km SSW of False Pass, 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	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.158 · 11 stations
3.4	ML, local (Richter)	Alaska Earthquake Center	Preliminary

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: 38 in the 60 days after this one and 65 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us7000qqr6 (also filed as ak025aankjvb). Read Thu, Oct 1, 2026, 2:48 AM UTC.