Intense gusts reaching speeds of approximately 155km/h (96mph) have caused around 90,000 households without power and compelled officials to halt over 100 flights, based on local media.
These gusts are affecting the whole South Island and southern parts of the North Island, according to the national weather agency.
The nation's agencies have released uncommon high-level wind alerts - the top caution category - in central regions encompassing Canterbury and Wellington.
Locals have been encouraged to stay indoors, refrain from journeys, and get ready for more utility disruptions.
Widespread Impact and Crisis Measures
The power cut is primarily influencing residences mainly in the South Island, though authorities state that the electricity supply was being gradually reinstated.
Domestic outlets have indicated that in certain areas structures have suffered roof damage, whereas utility poles and vegetation have been knocked down by the winds.
Across Wellington, a man was fatally injured after being struck by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a individual was pushed toward oncoming traffic on a road by a intensive burst, in a event that was filmed in a widely shared car camera footage.
Air travel to and from the city have been cancelled as a result of the weather, whereas various routes and public facilities are shut down.
Meanwhile authorities in Canterbury have issued a emergency situation, to support disaster response efforts.
Labor Protests Alongside Harsh Weather
The wild winds on today come as tens of thousands of educators, medical professionals and government employees are engaged in what has been called a "mega strike", requesting higher wages and enhanced employment terms.
Yet the severe conditions has compelled them to change various scheduled activities, with several external protests moved indoors or abandoned.
Like conditions are affecting the neighboring country, causing a heatwave to the nation's interior regions.
Agencies have issued fire bans for fear of forest fires.
