Intense winds reaching velocities of approximately 155km/h (96mph) have left approximately 90,000 households without power and compelled officials to call off more than 100 air travel services, based on local media.
The winds are affecting the whole South Island and lower areas of the northern region, according to the national weather agency.
The nation's agencies have issued uncommon high-level wind alerts - the most severe warning - in key areas including these major districts.
Locals have been advised to remain inside, avoid travel, and prepare for further electricity and network failures.
Broad Destruction and Emergency Response
The electricity loss appears to be affecting residences predominantly in the South Island, though agencies say that energy was being gradually reinstated.
Domestic outlets have indicated that in various locations roofs have been ripped off houses, whereas power lines and trees have been knocked down by the gusts.
Across Wellington, a individual was killed after being impacted by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a female was swept into approaching vehicles on a thoroughfare by a intensive burst, in a moment that was captured in a viral dashcam video.
Flights in and out of the urban area have been halted because of the winds, while certain highways and community centers are shut down.
Meanwhile local leaders have announced a crisis declaration, to assist emergency management operations.
Labor Protests Amid Severe Conditions
The powerful gales on Thursday occur while many of educators, medical professionals and government employees are participating in what has been described as a "mega strike", requesting higher wages and enhanced employment terms.
But the extreme weather has pressured them to modify certain arrangements, with various open-air gatherings relocated inside or called off.
Like conditions are impacting Australia, bringing a high-temperature event to the nation's interior regions.
Officials have issued burning restrictions for fear of forest fires.