Powerful gusts attaining velocities of as high as 155km/h (96mph) have resulted in nearly 90,000 homes without power and compelled agencies to cancel more than 100 air travel services, based on domestic outlets.
The gales are influencing the entire southern region and lower areas of the North Island, according to the country's meteorological service.
New Zealand authorities have announced rare severe gust advisories - the highest alert level - in central regions such as these major districts.
Residents have been advised to remain inside, refrain from journeys, and prepare for more electricity and network failures.
Extensive Impact and Emergency Response
The electricity loss appears to be affecting households mainly in the southern region, although authorities state that the electricity supply was being restored progressively.
Domestic outlets have indicated that in various locations homes have lost their roofs, whereas utility poles and vegetation have been knocked down by the winds.
Within the capital, a individual was fatally injured after being struck by a wooden fragment at a popular trail walking spot on earlier this week.
Also in the capital, a female was pushed toward approaching vehicles on a road by a strong gust of wind, in a event that was filmed in a viral dashcam video.
Flights in and out of the city have been halted because of the weather, whereas certain highways and community centers are not operating.
At the same time authorities in Canterbury have announced a emergency situation, to assist disaster response efforts.
Work Stoppages During Harsh Weather
The powerful gales on today occur while tens of thousands of teachers, doctors and other public workers are participating in what has been termed a "mega strike", demanding better pay and working conditions.
Yet the severe conditions has compelled them to change various scheduled activities, with some outdoor rallies relocated inside or abandoned.
Similar gusts are impacting the nearby nation, ushering in a high-temperature event to the nation's interior regions.
Agencies have declared burning restrictions for fear of wildfires.