M3.2 earthquake 59 km SE of Adak, Alaska

A magnitude 3.2 earthquake struck 59 km SE of Adak, Alaska on Sun, Feb 1, 2026, 5:57 AM HAST (15:57 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.0 89 km SSW 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
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.128 · 8 stations
3.1	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.3 · 11 stations

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: 128 in the 60 days after this one and 76 in the 30 days before it.

The first 60 of 128.

From the USGS Earthquake Hazards Program and its partner networks, event us6000s93v (also filed as ak2026cgdfzo). Read Thu, Oct 1, 2026, 8:12 PM UTC.