Almost 12,000 lightning strikes have been recorded over the North Island today.
WeatherWatch.co.nz said the thundery weather peaked today and was to finally ease back this evening.
Wild thunderstorms continued in some parts of the North Island tonight, mostly around northern parts of Auckland and central eastern parts of the North Island.
As the evening continued to cool, the thunderstorms would ease.
WeatherWatch.co.nz head weather analyst Philip Duncan said storms may pop up in the afternoon tomorrow but were likely to be far more isolated and far less intense.
Mr Duncan said thunderstorms peaked this afternoon with a few thousand lightning strikes detected in just 60 minutes.
Meanwhile, a hot day was on the way for eastern parts of the South Island on Saturday ahead of a cold change in which temperatures would drop by more than 10C on Sunday for those in the east.
