M2.3 earthquake 58 km WNW of Ninilchik, Alaska

A magnitude 2.3 earthquake struck 58 km WNW of Ninilchik, Alaska on Mon, Oct 20, 2025, 10:12 AM AKDT (18:12 UTC), 111 km (69 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M3.7 55 km WNW of Happy Valley, 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
2.3	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.6	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.038 · 90 stations

No one has reported feeling this quake to the USGS.

An automatic solution; a seismologist may revise it.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 151 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event ak025dgv93pp (also filed as us6000ribx). Read Sat, Oct 3, 2026, 1:29 AM UTC.