M4.1 earthquake 86 km NNE of Adak, Alaska

A magnitude 4.1 earthquake struck 86 km NNE of Adak, Alaska on Fri, Aug 5, 2022, 11:17 PM HADT (08:17 UTC), 225 km (140 mi) below the surface.

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
4.1	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.091 · 33 stations
4.1	mb, body-wave	Alaska Earthquake Center	Preliminary

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: 43 in the 60 days after this one and 79 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us6000i8ls (also filed as ak022a0o0tn7). Read Thu, Oct 1, 2026, 1:36 PM UTC.