More than a thousand lightning strikes lit up the sky and thunder boomed across the top of the South Island and bottom of the North overnight.
MetService has warned of more rain, squalls, strong winds, thunderstorms and even coastal tornadoes today as another front makes its way across the country.
For Auckland, there is a moderate risk of thunderstorms about midday, which are likely to be accompanied by heavy rain, hail and strong winds up to 110km/h.
There is also a risk of severe thunderstorms from the Waikato to the Kapiti Coast this morning and MetService has warned there could be small coastal tornadoes.