M1.8 earthquake 85 km SSE of Unalaska, Alaska

A magnitude 1.8 earthquake struck 85 km SSE of Unalaska, Alaska on Wed, Jul 27, 2016, 6:23 PM AKDT (02:23 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M4.8 63 km SSE 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: 153 in the 60 days after this one and 82 in the 30 days before it.

The first 60 of 153.

From the USGS Earthquake Hazards Program and its partner networks, event ak0169nc6qw6 (also filed as ak13832327). Read Sun, Oct 4, 2026, 7:47 PM UTC.