M1.9 earthquake Alaska Peninsula

A magnitude 1.9 earthquake struck in the Alaska Peninsula on Sat, Jul 31, 2021, 3:17 PM AKDT (23:17 UTC), 80 km (50 mi) below the surface.

A larger quake followed: M3.3 30 km S of Sand Point, 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: 80 in the 60 days after this one and 56 in the 30 days before it.

The first 60 of 80.

From the USGS Earthquake Hazards Program and its partner networks, event ak0219qzq79y. Read Sat, Oct 3, 2026, 10:45 PM UTC.