M2.1 earthquake 30 km SSW of Skwentna, Alaska

A magnitude 2.1 earthquake struck 30 km SSW of Skwentna, Alaska on Sat, Sep 25, 2021, 2:56 AM AKDT (10:56 UTC), 71 km (44 mi) below the surface.

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

A larger quake followed: M3.4 15 km WSW of Willow, 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
2.1	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.03 · 145 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 202 in the 60 days after this one and 135 in the 30 days before it.

The first 60 of at least 202.

From the USGS Earthquake Hazards Program and its partner networks, event ak021cbebgvm (also filed as us7000feca). Read Fri, Oct 2, 2026, 7:48 PM UTC.