M2.3 earthquake 11 km N of Ridgeway, Alaska

A magnitude 2.3 earthquake struck 11 km N of Ridgeway, Alaska on Fri, Sep 25, 2020, 2:19 PM AKDT (22:19 UTC), 58 km (36 mi) below the surface.

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

A larger quake followed: M3.3 42 km WNW of Ninilchik, 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
2.5	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.036 · 104 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 199 in the 60 days after this one and 115 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event ak020cd8s0g5 (also filed as us6000c1fx). Read Thu, Oct 1, 2026, 8:51 PM UTC.