Severe winds attaining velocities of approximately 155km/h (96mph) have caused around 90,000 households experiencing outages and forced authorities to call off over 100 air travel services, based on local media.
The gales are impacting the entire South Island and lower areas of the northern region, as stated by the national weather agency.
The nation's agencies have announced uncommon red wind warnings - the highest alert level - in core zones encompassing Wellington and Canterbury.
Locals have been advised to avoid going outside, stay off roads, and prepare for further electricity and network failures.
Extensive Destruction and Emergency Measures
The power cut is primarily influencing homes mostly in the South Island, while authorities say that the electricity supply was being restored progressively.
Regional news have reported that in various locations roofs have been ripped off houses, while utility poles and vegetation have been brought down by the winds.
In Wellington, a individual was fatally injured after being struck by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a individual was swept into moving cars on a road by a intensive burst, in a incident that was filmed in a popular vehicle recording.
Air travel to and from the city have been cancelled as a result of the weather, while various routes and public facilities are not operating.
At the same time local leaders have issued a state of emergency, to facilitate recovery activities.
Work Stoppages During Severe Weather
The powerful gales on Thursday coincide with many of educators, medical professionals and government employees take part in what has been termed a "major walkout", requesting improved salaries and workplace environments.
But the severe conditions has pressured them to change some of their plans, with various open-air gatherings shifted to interior venues or called off.
Like conditions are affecting Australia, causing a high-temperature event to the country's outback.
Authorities have declared flame prohibitions for apprehension regarding bushfires.