M4.4 earthquake 89 km ESE of Adak, Alaska

A magnitude 4.4 earthquake struck 89 km ESE of Adak, Alaska on Thu, May 8, 1986, 9:49 PM HADT (06:49 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.8 76 km ESE 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: 159 in the 60 days after this one and 40 in the 30 days before it.

The first 60 of 159.

From the USGS Earthquake Hazards Program and its partner networks, event usp0002tt6. Read Tue, Sep 22, 2026, 9:28 PM UTC.