M6.0 earthquake - Bonin Islands, Japan region

What happened

A magnitude 6 earthquake struck Bonin Islands, Japan region on 31 Jan 1973, 20:55 UTC at a depth of 498 km.

Earthquakes of this size are classed as Strong. Can cause damage in populated areas up to tens of kilometres away. This was a deep earthquake; shaking at the surface is usually weak for its size.