While it was fine mid-afternoon in Napier, with a temperature of 20C after 3.30pm, a MetService “severe thunderstorm watch” remained in place for the area from Bay of Plenty to the Tararua District from 1pm-9pm.
Issued at 8.20am, the advisory said thunderstorms were expected to develop over the central and southern North Island in the afternoon and evening, bringing heavy rain with intensities of 10-25mm/h, hail and the risk of small localised tornadoes or funnel clouds.
There was a moderate risk of “severe thunderstorms” developing in Hawke’s Bay and the Tararua District, producing localised downpours of 25 -40mm/h. This is more seasonal for Hawke’s Bay, which has over the years had some notable thunder and hail storms in November and December, while it’s almost three years since the November 9, 2020, Napier floods, which brought about 250mm of rain to the city and resulted in the declaration of Civil Defence state of emergency.
MetService meteorologist Lewis Ferris said fog similar to that in Napier had descended more-expectedly in Christchurch and Dunedin on Wednesday morning.