Severe winds hitting velocities of approximately 155km/h (96mph) have resulted in around 90,000 households without power and compelled agencies to halt more than 100 flights, according to domestic outlets.
The gales are affecting the entire southern region and southern parts of the North Island, per the national weather agency.
The nation's agencies have released uncommon high-level wind alerts - the top caution category - in core zones including Wellington and Canterbury.
Residents have been encouraged to stay indoors, refrain from journeys, and get ready for additional utility disruptions.
Broad Damage and Emergency Measures
The power cut appears to be affecting residences mostly in the South Island, while authorities say that power was being restored progressively.
Regional news have reported that in some places roofs have been ripped off houses, and power lines and trees have been knocked down by the winds.
Across Wellington, a man was killed after being struck by a wooden fragment at a frequent walking route on Tuesday.
Additionally in the city, a individual was blown onto approaching vehicles on a street by a intensive burst, in a event that was captured in a widely shared car camera footage.
Flights entering and leaving the city have been halted as a result of the weather, and various routes and public facilities are also closed.
At the same time Canterbury officials have announced a state of emergency, to assist disaster response efforts.
Strike Action Amid Extreme Weather
The wild winds on Thursday coincide with many of teachers, doctors and other public workers are participating in what has been termed a "major walkout", demanding improved salaries and workplace environments.
But the intense climate has pressured them to alter some of their plans, with several external protests relocated inside or called off.
Comparable winds are also sweeping Australia, bringing a heatwave to the country's outback.
Agencies have issued flame prohibitions for apprehension regarding forest fires.