Ranongga is an island located in the New Georgia Islands group of Western Province, Solomon Islands. Ranongga was sighted in 1787 by sailors Read and Dale. On August 18, 1959, a seismic sea wave was generated off the west coast of Ranongga Island, at 08 hr 05 min. Soon after, large waves were observed in Vori, on the northern coast of th…Ranongga is an island located in the New Georgia Islands group of Western Province, Solomon Islands. Ranongga was sighted in 1787 by sailors Read and Dale. On August 18, 1959, a seismic sea wave was generated off the west coast of Ranongga Island, at 08 hr 05 min. Soon after, large waves were observed in Vori, on the northern coast of the island. The sea receded by 15m and then returned to its original position. In May 2007 there was another large earthquake, and tsunami, and the whole Island lifted out of the sea by 3 metres, and stayed there, exposing all of the reefs around the Island, making life very hard for the locals for some time after.