Severe gusts hitting velocities of as high as 155km/h (96mph) have left approximately 90,000 homes without power and forced agencies to cancel over 100 air travel services, as reported by regional news sources.
The winds are affecting the whole South Island and southern sections of the North Island, per the national weather agency.
The nation's agencies have released infrequent high-level wind alerts - the highest alert level - in core zones encompassing Wellington and Canterbury.
Residents have been advised to avoid going outside, stay off roads, and get ready for further utility disruptions.
Widespread Destruction and Crisis Measures
The electricity loss seems to be impacting residences predominantly in the South Island, though agencies say that the electricity supply was being slowly brought back.
Domestic outlets have stated that in various locations structures have suffered roof damage, while trees and electricity poles have been toppled by the winds.
In Wellington, a person was fatally injured after being struck by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a woman was pushed toward approaching vehicles on a street by a strong gust of wind, in a incident that was captured in a viral dashcam video.
Flights to and from the metropolis have been cancelled due to the winds, whereas certain highways and community centers are not operating.
At the same time authorities in Canterbury have issued a state of emergency, to assist disaster response efforts.
Work Stoppages Alongside Harsh Weather
The wild winds on this day come as numerous of school staff, physicians and civil servants are engaged in what has been described as a "significant labor action", requesting better pay and working conditions.
But the extreme weather has pressured them to alter certain arrangements, with several external protests moved indoors or called off.
Comparable winds are affecting the nearby nation, ushering in a period of extreme heat to the nation's interior regions.
Agencies have issued flame prohibitions for fear of wildfires.
