Intense gusts attaining velocities of as high as 155km/h (96mph) have caused around 90,000 properties without power and forced agencies to call off more than 100 air travel services, based on local media.
The winds are affecting the entire southern region and southern parts of the North Island, per the country's meteorological service.
The nation's agencies have issued infrequent high-level wind alerts - the top caution category - in central regions including these major districts.
Residents have been advised to remain inside, avoid travel, and prepare for more power and communication outages.
Extensive Damage and Crisis Response
This outage seems to be impacting households mainly in the southern region, although officials say that energy was being slowly brought back.
Local media have reported that in various locations structures have suffered roof damage, and trees and electricity poles have been toppled by the gales.
Across Wellington, a man was fatally injured after being impacted by a wooden fragment at a frequent walking route on Tuesday.
Additionally in the city, a individual was swept into approaching vehicles on a street by a intensive burst, in a event that was recorded in a popular vehicle recording.
Flights entering and leaving the city have been cancelled because of the weather, and some roads and libraries are not operating.
Simultaneously Canterbury officials have declared a state of emergency, to facilitate disaster response efforts.
Work Stoppages During Harsh Conditions
The powerful gales on Thursday coincide with numerous of educators, medical professionals and government employees are engaged in what has been called a "major walkout", demanding improved salaries and workplace environments.
But the intense climate has compelled them to alter certain arrangements, with several external protests moved indoors or abandoned.
Comparable winds are also sweeping the nearby nation, ushering in a heatwave to the nation's interior regions.
Agencies have announced flame prohibitions for fear of wildfires.
