M7.0 earthquake - 80 km SSE of Attu Station, Alaska

What happened

A magnitude 7 earthquake struck 80 km SSE of Attu Station, Alaska on 16 Apr 1940, 06:07 UTC at a depth of 30 km.

Earthquakes of this size are classed as Major. Can cause serious damage over large areas. This was a shallow earthquake, which tends to be felt more strongly at the surface.