Intense winds hitting velocities of as high as 155km/h (96mph) have caused nearly 90,000 homes without power and led agencies to cancel over 100 flights, according to local media.
The winds are influencing the complete southern region and southern parts of the northern region, per the weather forecasting body.
The nation's agencies have issued infrequent severe gust advisories - the highest alert level - in central regions encompassing Wellington and Canterbury.
Residents have been encouraged to avoid going outside, refrain from journeys, and prepare for further electricity and network failures.
Extensive Destruction and Emergency Measures
This outage is primarily influencing households mostly in the South Island, though authorities say that energy was being gradually reinstated.
Domestic outlets have indicated that in various locations structures have suffered roof damage, while power lines and trees have been brought down by the gusts.
In Wellington, a individual was lost his life after being impacted by a falling limb at a frequent walking route on earlier this week.
Also in the capital, a woman was swept into approaching vehicles on a street by a powerful blast, in a incident that was recorded in a viral dashcam video.
Flights to and from the urban area have been suspended because of the weather, while certain highways and community centers are not operating.
Simultaneously local leaders have issued a crisis declaration, to facilitate emergency management operations.
Labor Protests Amid Severe Weather
The wild winds on this day occur while numerous of teachers, doctors and other public workers take part in what has been described as a "significant labor action", calling for better pay and working conditions.
Yet the extreme weather has pressured them to alter certain arrangements, with several external protests shifted to interior venues or called off.
Comparable winds are impacting Australia, ushering in a period of extreme heat to the nation's interior regions.
Authorities have issued flame prohibitions for fear of bushfires.
