M6.3 earthquake - 260 km E of Kuril’sk, Russia

What happened

A magnitude 6.3 earthquake struck 260 km E of Kuril’sk, Russia on 12 Aug 1939, 09:49 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.