M1.9 earthquake 127 km W of Adak, Alaska

A magnitude 1.9 earthquake struck 127 km W of Adak, Alaska on Wed, May 10, 2017, 12:15 AM HADT (09:15 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M5.1 133 km W 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 199 in the 60 days after this one and at least 200 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event ak0175z5bac0 (also filed as ak16016840). Read Fri, Oct 2, 2026, 9:37 PM UTC.