M1.8 earthquake 66 km SW of Adak, Alaska

A magnitude 1.8 earthquake struck 66 km SW of Adak, Alaska on Thu, Jun 14, 2018, 6:40 AM HADT (15:40 UTC), 34 km (21 mi) below the surface.

A larger quake followed: M4.2 44 km SW 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: at least 201 in the 60 days after this one and 59 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event ak0187l4uger (also filed as ak19770725). Read Fri, Oct 2, 2026, 5:18 PM UTC.