The Canterbury/Kaikoura storm of January 19, 1988
A case of explosive cyclogenesis over the Tasman Sea in January 1988 is investigated. This storm, which was poorly forecast by operational numerical models, brought winds of up to hurricane force in eastern coastal areas of the South Island. It was found that some of the physical processes causing the deepening were similar to those normally associated with tropical cyclone development. The cloud system associated with the incipient depression took on a characteristic 'banana' shape. Some similarities with the Northern Hemisphere QE II storm were noted. Underestimation of the storm's intensity was related to its innocuous appearance in the satellite imagery and to the unusual dynamics associated with the incursion of tropical air.