Powerful winds reaching velocities of as high as 155km/h (96mph) have caused approximately 90,000 households without power and forced authorities to halt more than 100 aircraft departures, as reported by domestic outlets.
The winds are influencing the whole southern region and lower areas of the North Island, according to the country's meteorological service.
Officials in New Zealand have released rare high-level wind alerts - the most severe warning - in central regions such as Canterbury and Wellington.
Locals have been urged to stay indoors, stay off roads, and prepare for additional power and communication outages.
Widespread Damage and Crisis Response
The electricity loss seems to be impacting residences mainly in the southern region, though agencies say that energy was being slowly brought back.
Regional news have stated that in certain areas roofs have been ripped off houses, and trees and electricity poles have been brought down by the gales.
In Wellington, a individual was lost his life after being struck by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a woman was blown onto oncoming traffic on a street by a powerful blast, in a event that was recorded in a popular vehicle recording.
Air travel in and out of the city have been halted because of the gusts, and certain highways and community centers are also closed.
Simultaneously authorities in Canterbury have declared a emergency situation, to facilitate disaster response efforts.
Labor Protests Amid Harsh Weather
The powerful gales on Thursday occur while tens of thousands of teachers, doctors and other public workers take part in what has been called a "mega strike", demanding improved salaries and workplace environments.
However the extreme weather has pressured them to modify certain arrangements, with several external protests shifted to interior venues or cancelled.
Similar gusts are affecting the neighboring country, ushering in a high-temperature event to the remote areas.
Officials have declared fire bans for apprehension regarding forest fires.