M3.4 earthquake 130 km WSW of Adak, Alaska

A magnitude 3.4 earthquake struck 130 km WSW of Adak, Alaska on Sat, Nov 29, 2025, 10:30 PM HAST (08:30 UTC), 38 km (23 mi) below the surface.

A larger quake followed: M4.5 142 km WSW 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
3.4	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.115 · 10 stations
3.61	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.19330483291862896 · 15 stations

1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: 98 in the 60 days after this one and 37 in the 30 days before it.

The first 60 of 98.

From the USGS Earthquake Hazards Program and its partner networks, event us7000rerp (also filed as ak2025xnxtik). Read Fri, Oct 2, 2026, 8:30 AM UTC.