M2.3 earthquake 59 km WNW of Ninilchik, Alaska

A magnitude 2.3 earthquake struck 59 km WNW of Ninilchik, Alaska on Mon, Sep 20, 2021, 11:52 AM AKDT (19:52 UTC), 112 km (70 mi) below the surface.

A larger quake followed: M3.1 58 km WNW of Nanwalek, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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: 200 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event ak021c39yo0o. Read Thu, Sep 24, 2026, 2:22 AM UTC.