Powerful gusts hitting velocities of as high as 155km/h (96mph) have resulted in around 90,000 households lacking electricity and compelled officials to cancel over 100 flights, based on domestic outlets.
The winds are impacting the whole South Island and southern sections of the northern region, per the national weather agency.
Officials in New Zealand have issued uncommon severe gust advisories - the most severe warning - in core zones encompassing these major districts.
Locals have been encouraged to avoid going outside, avoid travel, and make arrangements for more electricity and network failures.
Widespread Impact and Emergency Response
The electricity loss seems to be impacting residences predominantly in the southern region, while agencies say that energy was being gradually reinstated.
Regional news have reported that in some places structures have suffered roof damage, while power lines and trees have been brought down by the gales.
Across Wellington, a individual was killed after being struck by a tree branch at a well-known hiking path on Tuesday.
Additionally in the city, a individual was blown onto oncoming traffic on a road by a intensive burst, in a event that was captured in a viral dashcam video.
Flights in and out of the city have been suspended as a result of the weather, whereas various routes and public facilities are shut down.
At the same time authorities in Canterbury have declared a emergency situation, to support disaster response efforts.
Labor Protests Amid Harsh Weather
The wild winds on Thursday come as tens of thousands of teachers, doctors and other public workers are participating in what has been termed a "mega strike", requesting better pay and working conditions.
Yet the extreme weather has compelled them to alter various scheduled activities, with some outdoor rallies moved indoors or abandoned.
Similar gusts are impacting the neighboring country, ushering in a period of extreme heat to the country's outback.
Agencies have declared burning restrictions for fear of wildfires.