Thunderstorms and wind gusts of over 110km/h are expected to batter the north of the country overnight.
Northland, Auckland and Coromandel and Hamilton are all in the firing line.
The wild weather is expected to kick off around 10pm Thursday evening and continue through to 6am Friday morning.
- Vicious thunderstorms, strong gusts to strike North Island, tornadoes possible
- Pictures of devastating tornado tearing through Auckland's Viaduct Harbour
- Wild weather destroys houses in Auckland and Taranaki
Metservice has issued a severe thunderstorm watch for northern areas of the North Island.
"We are advising residents in affected areas to tie down objects that could be caught by the wind overnight," says Metservice meteorologist Lewis Ferris.
"There is also a possibility of tornadoes developing with severe thunderstorm cells."
In anticipation of the wild weather, Vector said extra crews were on standby for any power outages.
"The risk of trees coming into contact with power lines and cars colliding with power poles in the wet, increases during these types of weather events," said Vector's head of network field services, Marko Simunac.
The South Island was also expected to get its share of thunderstorms, with the West Coast at risk until Friday evening.
The wet weather is set to ease in the north on Friday evening, with most places in store for a clear weekend.
Despite lingering southwesterlies, most places would be relatively dry over the weekend, though showers were expected in western areas of the North Island, Westland and Buller.