M4.3 earthquake 126 km SSW of Nikolski, Alaska

A magnitude 4.3 earthquake struck 126 km SSW of Nikolski, Alaska on Sat, Jan 18, 2025, 2:11 PM AKST (23:11 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.6 204 km SSW of Nikolski, 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
4.3	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.071 · 55 stations
4.2	mb, body-wave	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 II, weak shaking.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: 58 in the 60 days after this one and 25 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us6000pl08 (also filed as ak025u5fsec). Read Fri, Oct 2, 2026, 3:48 PM UTC.