Intense gales hitting velocities of as high as 155km/h (96mph) have resulted in nearly 90,000 homes experiencing outages and forced officials to halt over 100 flights, as reported by local media.
These gusts are affecting the complete South Island and lower areas of the North Island, per the national weather agency.
Officials in New Zealand have announced uncommon severe gust advisories - the highest alert level - in central regions such as Canterbury and Wellington.
Residents have been advised to remain inside, refrain from journeys, and get ready for more electricity and network failures.
Extensive Damage and Emergency Measures
The power cut seems to be impacting residences mainly in the South Island, although authorities say that energy was being restored progressively.
Local media have reported that in various locations structures have suffered roof damage, while trees and electricity poles have been knocked down by the gales.
In Wellington, a individual was fatally injured after being hit by a wooden fragment at a popular trail walking spot on earlier this week.
Meanwhile in Wellington, a female was swept into oncoming traffic on a street by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Aircraft services to and from the metropolis have been suspended because of the gusts, while some roads and libraries are not operating.
Simultaneously Canterbury officials have declared a emergency situation, to support emergency management operations.
Labor Protests During Harsh Conditions
The wild winds on today coincide with many of teachers, doctors and other public workers are engaged in what has been called a "major walkout", demanding higher wages and enhanced employment terms.
However the extreme weather has pressured them to alter some of their plans, with some outdoor rallies relocated inside or abandoned.
Comparable winds are affecting the nearby nation, causing a high-temperature event to the remote areas.
Officials have announced burning restrictions for concern about forest fires.