M1.6 earthquake Alaska Peninsula

A magnitude 1.6 earthquake struck in the Alaska Peninsula on Sat, Feb 25, 2023, 6:22 PM AKST (03:22 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M3.5 32 km E of Port Heiden, 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: 159 in the 60 days after this one and 53 in the 30 days before it.

The first 60 of 159.

From the USGS Earthquake Hazards Program and its partner networks, event av91090878. Read Fri, Oct 2, 2026, 7:39 PM UTC.