Powerful winds hitting speeds of approximately 155km/h (96mph) have resulted in approximately 90,000 homes experiencing outages and forced agencies to halt over 100 air travel services, based on local media.
The gales are influencing the whole South Island and southern parts of the northern region, per the country's meteorological service.
Officials in New Zealand have announced rare red wind warnings - the highest alert level - in central regions encompassing Wellington and Canterbury.
People have been urged to stay indoors, avoid travel, and prepare for more utility disruptions.
Broad Impact and Crisis Response
The electricity loss seems to be impacting households predominantly in the South Island, though agencies report that power was being restored progressively.
Domestic outlets have indicated that in some places homes have lost their roofs, whereas power lines and trees have been knocked down by the gales.
In Wellington, a individual was killed after being struck by a falling limb at a well-known hiking path on earlier this week.
Also in the capital, a individual was blown onto approaching vehicles on a road by a strong gust of wind, in a moment that was filmed in a popular vehicle recording.
Air travel in and out of the metropolis have been halted as a result of the weather, while certain highways and community centers are shut down.
Meanwhile authorities in Canterbury have issued a crisis declaration, to facilitate emergency management operations.
Strike Action Alongside Harsh Weather
The powerful gales on this day come as numerous of teachers, doctors and other public workers are engaged in what has been termed a "mega strike", calling for improved salaries and workplace environments.
Yet the extreme weather has compelled them to modify certain arrangements, with various open-air gatherings moved indoors or cancelled.
Similar gusts are affecting Australia, ushering in a high-temperature event to the remote areas.
Agencies have issued flame prohibitions for concern about bushfires.