M1.7 earthquake 66 km SE of Unalaska, Alaska

A magnitude 1.7 earthquake struck 66 km SE of Unalaska, Alaska on Tue, Mar 28, 2023, 5:22 AM AKDT (13:22 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M4.9 Fox Islands, Aleutian Islands, 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: at least 200 in the 60 days after this one and 72 in the 30 days before it.

The first 60 of at least 200.

From the USGS Earthquake Hazards Program and its partner networks, event ak023403mkrc. Read Fri, Oct 2, 2026, 2:00 PM UTC.