Severe winds reaching speeds of approximately 155km/h (96mph) have resulted in approximately 90,000 households without power and led authorities to cancel more than 100 aircraft departures, based on local media.
These gusts are impacting the entire southern region and southern sections of the North Island, according to the weather forecasting body.
New Zealand authorities have issued rare severe gust advisories - the top caution category - in core zones encompassing Canterbury and Wellington.
Locals have been encouraged to remain inside, avoid travel, and prepare for additional utility disruptions.
Extensive Destruction and Emergency Response
The electricity loss is primarily influencing households mainly in the South Island, though authorities report that power was being gradually reinstated.
Local media have reported that in various locations homes have lost their roofs, while utility poles and vegetation have been knocked down by the gales.
Across Wellington, a man was killed after being struck by a falling limb at a popular trail walking spot on earlier this week.
Additionally in the city, a female was pushed toward moving cars on a thoroughfare by a intensive burst, in a moment that was captured in a widely shared car camera footage.
Air travel entering and leaving the city have been cancelled because of the weather, and various routes and public facilities are not operating.
Simultaneously authorities in Canterbury have issued a state of emergency, to assist emergency management operations.
Work Stoppages Amid Harsh Weather
The powerful gales on Thursday coincide with tens of thousands of teachers, doctors and other public workers take part in what has been termed a "major walkout", calling for better pay and working conditions.
But the extreme weather has pressured them to modify various scheduled activities, with various open-air gatherings shifted to interior venues or cancelled.
Comparable winds are impacting Australia, causing a high-temperature event to the nation's interior regions.
Agencies have announced fire bans for apprehension regarding bushfires.