Powerful winds reaching velocities of up to 155km/h (96mph) have left nearly 90,000 homes lacking electricity and compelled agencies to halt over 100 air travel services, as reported by local media.
The gales are impacting the whole South Island and southern parts of the northern region, according to the national weather agency.
The nation's agencies have released infrequent severe gust advisories - the most severe warning - in core zones such as Wellington and Canterbury.
People have been advised to remain inside, refrain from journeys, and prepare for additional utility disruptions.
Broad Damage and Emergency Measures
This outage seems to be impacting homes predominantly in the southern region, though agencies report that the electricity supply was being restored progressively.
Domestic outlets have stated that in some places roofs have been ripped off houses, whereas trees and electricity poles have been toppled by the gusts.
Across Wellington, a person was killed after being struck by a falling limb at a frequent walking route on earlier this week.
Additionally in the city, a woman was blown onto moving cars on a street by a strong gust of wind, in a incident that was filmed in a widely shared car camera footage.
Flights in and out of the city have been halted due to the weather, and various routes and public facilities are also closed.
Simultaneously authorities in Canterbury have announced a crisis declaration, to facilitate disaster response efforts.
Work Stoppages Alongside Harsh Weather
The wild winds on Thursday come as tens of thousands of school staff, physicians and civil servants take part in what has been termed a "major walkout", calling for improved salaries and workplace environments.
Yet the intense climate has pressured them to change some of their plans, with some outdoor rallies relocated inside or abandoned.
Like conditions are also sweeping Australia, bringing a period of extreme heat to the nation's interior regions.
Agencies have announced burning restrictions for apprehension regarding wildfires.