M4.1 earthquake 108 km NE of Atka, Alaska

A magnitude 4.1 earthquake struck 108 km NE of Atka, Alaska on Fri, Jun 30, 2023, 7:56 PM HADT (04:56 UTC), 187 km (116 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 · ±0.064 · 66 stations
3.7	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: 43 in the 60 days after this one and 7 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us6000kpd9 (also filed as ak0238d2j0m7). Read Thu, Oct 1, 2026, 4:43 AM UTC.