Severe winds hitting velocities of up to 155km/h (96mph) have caused approximately 90,000 homes without power and compelled officials to halt over 100 aircraft departures, as reported by local media.
The gales are impacting the complete South Island and southern parts of the North Island, according to the weather forecasting body.
New Zealand authorities have issued uncommon severe gust advisories - the top caution category - in key areas encompassing Wellington and Canterbury.
People have been encouraged to avoid going outside, avoid travel, and prepare for additional power and communication outages.
Widespread Destruction and Crisis Response
The power cut is primarily influencing homes predominantly in the South Island, while agencies say that energy was being restored progressively.
Regional news have indicated that in certain areas structures have suffered roof damage, while trees and electricity poles have been knocked down by the gales.
Within the capital, a man was lost his life after being impacted by a falling limb at a popular trail walking spot on earlier this week.
Also in the capital, a woman was swept into moving cars on a street by a strong gust of wind, in a moment that was filmed in a widely shared car camera footage.
Flights entering and leaving the urban area have been suspended as a result of the weather, while various routes and public facilities are not operating.
Simultaneously authorities in Canterbury have declared a state of emergency, to facilitate disaster response efforts.
Work Stoppages Amid Harsh Conditions
These intense gusts on Thursday come as tens of thousands of teachers, doctors and other public workers are engaged in what has been described as a "major walkout", demanding improved salaries and workplace environments.
However the intense climate has compelled them to modify certain arrangements, with several external protests relocated inside or cancelled.
Like conditions are affecting Australia, bringing a high-temperature event to the country's outback.
Officials have announced flame prohibitions for concern about bushfires.
