Powerful gusts hitting speeds of up to 155km/h (96mph) have caused nearly 90,000 homes lacking electricity and compelled officials to cancel over 100 air travel services, as reported by local media.
These gusts are affecting the complete South Island and southern parts of the northern region, per the national weather agency.
The nation's agencies have issued rare red wind warnings - the highest alert level - in key areas encompassing Canterbury and Wellington.
Locals have been encouraged to remain inside, stay off roads, and get ready for additional electricity and network failures.
Broad Damage and Emergency Response
The electricity loss appears to be affecting homes mainly in the southern region, although officials state that power was being gradually reinstated.
Local media have reported that in certain areas roofs have been ripped off houses, while power lines and trees have been brought down by the gales.
Within the capital, a man was fatally injured after being struck by a wooden fragment at a frequent walking route on earlier this week.
Additionally in the city, a woman was blown onto oncoming traffic on a thoroughfare by a intensive burst, in a incident that was filmed in a widely shared car camera footage.
Flights entering and leaving the metropolis have been cancelled as a result of the weather, while some roads and libraries are shut down.
At the same time local leaders have announced a crisis declaration, to support disaster response efforts.
Work Stoppages Alongside Extreme Conditions
These intense gusts on Thursday come as many of teachers, doctors and other public workers are engaged in what has been called a "major walkout", demanding improved salaries and workplace environments.
However the extreme weather has pressured them to change various scheduled activities, with some outdoor rallies moved indoors or abandoned.
Similar gusts are affecting Australia, bringing a high-temperature event to the country's outback.
Officials have declared flame prohibitions for apprehension regarding forest fires.