Intense gales reaching speeds of approximately 155km/h (96mph) have left nearly 90,000 homes experiencing outages and led officials to call off in excess of 100 flights, according to local media.
These gusts are impacting the whole South Island and lower areas of the northern region, per the national weather agency.
The nation's agencies have announced uncommon red wind warnings - the highest alert level - in core zones encompassing Canterbury and Wellington.
Residents have been encouraged to avoid going outside, refrain from journeys, and make arrangements for additional power and communication outages.
Extensive Destruction and Crisis Response
This outage is primarily influencing households mostly in the southern region, while officials say that power was being gradually reinstated.
Domestic outlets have stated that in various locations homes have lost their roofs, while power lines and trees have been brought down by the gusts.
Within the capital, a person was fatally injured after being struck by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a woman was pushed toward approaching vehicles on a road by a intensive burst, in a moment that was captured in a widely shared car camera footage.
Flights entering and leaving the metropolis have been suspended because of the gusts, whereas certain highways and community centers are also closed.
Simultaneously local leaders have announced a crisis declaration, to assist recovery activities.
Labor Protests Amid Harsh Conditions
The wild winds on Thursday occur while many of educators, medical professionals and government employees are engaged in what has been termed a "significant labor action", requesting higher wages and enhanced employment terms.
Yet the extreme weather has compelled them to change some of their plans, with some outdoor rallies shifted to interior venues or abandoned.
Similar gusts are impacting the nearby nation, causing a heatwave to the remote areas.
Authorities have issued flame prohibitions for fear of bushfires.