M3.1 earthquake 225 km W of Adak, Alaska

A magnitude 3.1 earthquake struck 225 km W of Adak, Alaska on Fri, Jun 10, 2022, 8:20 AM HADT (17:20 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M4.4 258 km W of Adak, 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
3.1	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.091 · 16 stations
2.5	ML, local (Richter)	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: at least 200 in the 60 days after this one and 99 in the 30 days before it.

The first 60 of at least 200.

From the USGS Earthquake Hazards Program and its partner networks, event us6000i83q (also filed as ak0227ejrjpk). Read Thu, Oct 1, 2026, 6:52 AM UTC.