M6.6 earthquake - 230 km NNW of Nago, Japan

What happened

A magnitude 6.6 earthquake struck 230 km NNW of Nago, Japan on 15 Jan 1931, 21:01 UTC at a depth of 35 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.

The nearest town in our records is Nago, about 231 km away in Okinawa, Japan.