M2.7 earthquake 67 km NE of Adak, Alaska

A magnitude 2.7 earthquake struck 67 km NE of Adak, Alaska on Mon, Mar 24, 2025, 10:28 AM HADT (19:28 UTC), 185 km (115 mi) below the surface.

A larger quake followed: M4.2 69 km NNW 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
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.115 · 10 stations
2.4	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: 162 in the 60 days after this one and 122 in the 30 days before it.

The first 60 of 162.

From the USGS Earthquake Hazards Program and its partner networks, event us6000q6ml (also filed as ak0253tl35x4). Read Fri, Oct 2, 2026, 2:10 AM UTC.