A high risk of thunderstorms forecast for Auckland and the upper North Island could make Guy Fawkes night a fizzer for fireworks.
MetService said an active front was expected to sweep across Northland and Auckland this afternoon, bringing a high risk of thunderstorms.
The storms could be accompanied by heavy rain and strong wind gusts of 90 to 110km/h, and possibly small tornadoes.
There is a risk of severe thunderstorms ahead of the front over east Northland and northeast Auckland this evening, which could be accompanied by damaging wind gusts in excess of 110km/h, tornadoes and downpours.
A severe thunderstorm watch has been issued for Northland, Auckland and Great Barrier Island.