M6.1 earthquake - 151 km SSE of Attu Station, Alaska

What happened

A magnitude 6.1 earthquake struck 151 km SSE of Attu Station, Alaska on 23 May 1940, 06:01 UTC at a depth of 15 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.