Intense gusts hitting velocities of as high as 155km/h (96mph) have left around 90,000 households without power and forced officials to cancel over 100 flights, according to domestic outlets.
These gusts are affecting the entire southern region and southern sections of the North Island, per the country's meteorological service.
New Zealand authorities have released rare high-level wind alerts - the highest alert level - in central regions including these major districts.
Residents have been urged to avoid going outside, stay off roads, and prepare for further utility disruptions.
Widespread Damage and Emergency Measures
The power cut appears to be affecting homes predominantly in the South Island, though authorities state that the electricity supply was being restored progressively.
Regional news have reported that in certain areas structures have suffered roof damage, whereas trees and electricity poles have been knocked down by the winds.
In Wellington, a man was lost his life after being hit by a tree branch at a well-known hiking path on Tuesday.
Also in the capital, a woman was pushed toward approaching vehicles on a thoroughfare by a intensive burst, in a moment that was recorded in a popular vehicle recording.
Flights to and from the metropolis have been suspended because of the weather, while some roads and libraries are shut down.
Simultaneously authorities in Canterbury have declared a crisis declaration, to assist recovery activities.
Work Stoppages Alongside Harsh Conditions
The wild winds on Thursday coincide with tens of thousands of educators, medical professionals and government employees are participating in what has been termed a "major walkout", requesting improved salaries and workplace environments.
Yet the severe conditions has compelled them to change certain arrangements, with various open-air gatherings moved indoors or called off.
Comparable winds are impacting Australia, ushering in a period of extreme heat to the country's outback.
Agencies have declared fire bans for concern about bushfires.