Intense gales hitting speeds of up to 155km/h (96mph) have resulted in approximately 90,000 properties without power and compelled agencies to call off over 100 air travel services, as reported by domestic outlets.
These gusts are influencing the whole South Island and lower areas of the northern region, according to the country's meteorological service.
New Zealand authorities have released rare high-level wind alerts - the most severe warning - in key areas such as Wellington and Canterbury.
Locals have been advised to avoid going outside, refrain from journeys, and prepare for further electricity and network failures.
Extensive Destruction and Emergency Measures
The power cut appears to be affecting households predominantly in the southern region, though agencies say that power was being gradually reinstated.
Local media have stated that in certain areas homes have lost their roofs, while power lines and trees have been brought down by the winds.
Within the capital, a individual was lost his life after being hit by a tree branch at a frequent walking route on Tuesday.
Additionally in the city, a female was swept into approaching vehicles on a thoroughfare by a strong gust of wind, in a incident that was captured in a widely shared car camera footage.
Aircraft services to and from the city have been cancelled as a result of the weather, and certain highways and community centers are not operating.
Simultaneously Canterbury officials have announced a state of emergency, to support disaster response efforts.
Strike Action Alongside Extreme Conditions
These intense gusts on Thursday coincide with numerous of teachers, doctors and other public workers take part in what has been called a "significant labor action", calling for better pay and working conditions.
But the extreme weather has forced them to change certain arrangements, with some outdoor rallies relocated inside or cancelled.
Comparable winds are affecting Australia, ushering in a period of extreme heat to the country's outback.
Officials have announced flame prohibitions for concern about forest fires.
