M4.6 earthquake 99 km SSE of Sand Point, Alaska

A magnitude 4.6 earthquake struck 99 km SSE of Sand Point, Alaska on Sun, Dec 7, 2025, 1:17 PM AKST (22:17 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.2 123 km SSE of Sand Point, 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
4.6	Mwr, regional moment	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.049 · 40 stations
4.56	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.2796407933594109 · 78 stations

No one has reported feeling this quake to the USGS.

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.6 and up: 148 in the 60 days after this one and 84 in the 30 days before it.

The first 60 of 148.

From the USGS Earthquake Hazards Program and its partner networks, event us6000rt8g (also filed as ak2025ybvgex). Read Thu, Oct 1, 2026, 4:20 AM UTC.