M6.8 earthquake - 235 km WSW of Adak, Alaska

What happened

A magnitude 6.8 earthquake struck 235 km WSW of Adak, Alaska on 6 May 1987, 04:06 UTC at a depth of 20 km.

Earthquakes of this size are classed as Strong. Can cause damage in populated areas up to tens of kilometres away. This was a shallow earthquake, which tends to be felt more strongly at the surface.