M2.6 earthquake 104 km NE of Adak, Alaska

A magnitude 2.6 earthquake struck 104 km NE of Adak, Alaska on Wed, Jun 4, 2025, 4:39 PM HADT (01:39 UTC), 213 km (133 mi) below the surface.

A larger quake followed: M3.8 51 km N of Atka, 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
2.6	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.105 · 12 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: 48 in the 60 days after this one and 21 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us6000qjlc (also filed as ak025760o5zr). Read Mon, Oct 5, 2026, 9:18 AM UTC.