M1.7 earthquake 56 km ESE of Unalaska, Alaska

A magnitude 1.7 earthquake struck 56 km ESE of Unalaska, Alaska on Sun, Oct 9, 2016, 5:21 PM AKDT (01:21 UTC), 54 km (33 mi) below the surface.

A larger quake followed: M4.5 79 km SE of Akutan, 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: 99 in the 60 days after this one and 52 in the 30 days before it.

The first 60 of 99.

From the USGS Earthquake Hazards Program and its partner networks, event ak016d1pcldx (also filed as ak14193541). Read Sat, Oct 3, 2026, 2:56 PM UTC.