Severe gusts reaching speeds of as high as 155km/h (96mph) have caused nearly 90,000 homes lacking electricity and compelled agencies to cancel in excess of 100 air travel services, as reported by regional news sources.
The gales are impacting the whole southern region and southern sections of the North Island, according to the national weather agency.
The nation's agencies have released rare high-level wind alerts - the highest alert level - in key areas encompassing Canterbury and Wellington.
Residents have been encouraged to remain inside, avoid travel, and make arrangements for more power and communication outages.
Widespread Impact and Emergency Response
The electricity loss seems to be impacting households mostly in the South Island, although agencies report that energy was being gradually reinstated.
Domestic outlets have reported that in various locations structures have suffered roof damage, whereas power lines and trees have been toppled by the gales.
Across Wellington, a man was killed after being impacted by a wooden fragment at a popular trail walking spot on earlier this week.
Meanwhile in Wellington, a individual was swept into approaching vehicles on a road by a intensive burst, in a event that was captured in a popular vehicle recording.
Flights to and from the city have been cancelled as a result of the winds, whereas some roads and libraries are not operating.
At the same time authorities in Canterbury have issued a state of emergency, to facilitate disaster response efforts.
Work Stoppages Alongside Severe Conditions
The wild winds on Thursday come as tens of thousands of educators, medical professionals and government employees are participating in what has been described as a "mega strike", calling for improved salaries and workplace environments.
Yet the extreme weather has compelled them to change some of their plans, with various open-air gatherings moved indoors or cancelled.
Comparable winds are affecting Australia, ushering in a high-temperature event to the country's outback.
Officials have announced flame prohibitions for concern about bushfires.
