M4.3 earthquake 38 km SSW of Atka, Alaska

A magnitude 4.3 earthquake struck 38 km SSW of Atka, Alaska on Wed, May 14, 1986, 10:08 PM HADT (07:08 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.8 33 km W of Atka, 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: 69 in the 60 days after this one and 129 in the 30 days before it.

The first 60 of 69.

From the USGS Earthquake Hazards Program and its partner networks, event usp0002u13. Read Wed, Sep 23, 2026, 2:39 AM UTC.