M6.6 earthquake - 252 km SW of Port McNeill, Canada

What happened

A magnitude 6.6 earthquake struck 252 km SW of Port McNeill, Canada on 18 Jul 1939, 03:26 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.