M3.0 earthquake 112 km SSW of False Pass, Alaska

A magnitude 3.0 earthquake struck 112 km SSW of False Pass, Alaska on Mon, Aug 8, 2016, 9:12 PM AKDT (05:12 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M4.7 117 km ESE 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
3.0	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.128 · 8 stations
2.8	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: 110 in the 60 days after this one and 75 in the 30 days before it.

The first 60 of 110.

From the USGS Earthquake Hazards Program and its partner networks, event us20006u31 (also filed as ak016a78csz3). Read Mon, Oct 5, 2026, 7:16 AM UTC.