M6.4 earthquake - 67 km S of Attu Station, Alaska

What happened

A magnitude 6.4 earthquake struck 67 km S of Attu Station, Alaska on 11 May 1940, 13:54 UTC at a depth of 25 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.