M2.3 earthquake 69 km WNW of Ninilchik, Alaska

A magnitude 2.3 earthquake struck 69 km WNW of Ninilchik, Alaska on Wed, Aug 21, 2019, 5:47 PM AKDT (01:47 UTC), 137 km (85 mi) below the surface.

A larger quake followed: M4.1 16 km ESE of Pedro Bay, 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
2.3	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

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: at least 200 in the 60 days after this one and 153 in the 30 days before it.

The first 60 of at least 200.

From the USGS Earthquake Hazards Program and its partner networks, event ak019ar0mqj1 (also filed as us700056v8). Read Thu, Oct 1, 2026, 5:59 AM UTC.