M4.0 earthquake 38 km SSE of Atka, Alaska

A magnitude 4.0 earthquake struck 38 km SSE of Atka, Alaska on Mon, Jan 13, 2025, 1:38 PM HAST (23:38 UTC), 71 km (44 mi) below the surface.

A larger quake followed: M4.4 69 km ESE 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
4.0	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.105 · 12 stations
3.8	ML, local (Richter)	Alaska Earthquake Center	Preliminary

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

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: 114 in the 60 days after this one and 48 in the 30 days before it.

The first 60 of 114.

From the USGS Earthquake Hazards Program and its partner networks, event us6000pjub (also filed as ak025lvwq2j). Read Fri, Oct 2, 2026, 6:02 PM UTC.