Wellington was hit by thunder, lightning and hail after a sudden storm broke over the city.
More than 100 lightning strikes were recorded in Wellington, Marlborough and the Wairarapa between 2pm and 3pm, said Metservice spokesman Andy Downs.
Hail has fallen in the Wellington suburbs of Johnsonville and Karori.
The storm was sparked by an unstable depression following on the heels of a weak southerly.
The storm is not expected to last, with fine weather predicted for tomorrow, election day.
The lightning is also believed to have tripped a power station and caused a flash power outage in the city.
A Transpower spokeswoman said there was a brief outage at the Central Park substation soon after 2.30pm.
The outage caused power to switch on and off throughout much of the city.
- The Dominion Post