Intense winds attaining velocities of approximately 155km/h (96mph) have resulted in nearly 90,000 properties lacking electricity and led officials to call off over 100 aircraft departures, as reported by local media.
The gales are affecting the entire southern region and lower areas of the northern region, per the country's meteorological service.
The nation's agencies have released rare high-level wind alerts - the top caution category - in central regions encompassing these major districts.
People have been urged to stay indoors, stay off roads, and prepare for additional power and communication outages.
Broad Damage and Crisis Response
The power cut appears to be affecting homes mainly in the South Island, though authorities state that the electricity supply was being slowly brought back.
Domestic outlets have stated that in some places structures have suffered roof damage, whereas trees and electricity poles have been knocked down by the winds.
Across Wellington, a man was fatally injured after being hit by a tree branch at a popular trail walking spot on earlier this week.
Additionally in the city, a woman was swept into approaching vehicles on a thoroughfare by a powerful blast, in a moment that was captured in a widely shared car camera footage.
Aircraft services in and out of the metropolis have been halted as a result of the weather, whereas certain highways and community centers are not operating.
At the same time authorities in Canterbury have announced a crisis declaration, to assist recovery activities.
Work Stoppages Amid Harsh Weather
These intense gusts on today come as many of teachers, doctors and other public workers are engaged in what has been called a "mega strike", demanding better pay and working conditions.
Yet the extreme weather has compelled them to change some of their plans, with various open-air gatherings shifted to interior venues or cancelled.
Like conditions are affecting Australia, bringing a period of extreme heat to the country's outback.
Officials have declared burning restrictions for concern about bushfires.