M3.1 earthquake 116 km SSW of McCarthy, Alaska

A magnitude 3.1 earthquake struck 116 km SSW of McCarthy, Alaska on Sun, Sep 21, 2025, 8:54 AM AKDT (16:54 UTC), 7 km (4 mi) below the surface.

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
3.1	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.1	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.035 · 110 stations

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 8 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak025c4vq963 (also filed as us7000qxpx). Read Thu, Oct 1, 2026, 8:27 AM UTC.