M1.8 earthquake 76 km SW of Adak, Alaska

A magnitude 1.8 earthquake struck 76 km SW of Adak, Alaska on Sat, May 28, 2016, 5:12 PM HADT (02:12 UTC), 39 km (24 mi) below the surface.

A larger quake followed: M5.3 130 km WSW of Adak, 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.

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 90 in the 30 days before it.

The first 60 of 196.

From the USGS Earthquake Hazards Program and its partner networks, event ak0166w3vj97 (also filed as ak13610920). Read Mon, Oct 5, 2026, 1:51 PM UTC.