Intense gusts attaining speeds of as high as 155km/h (96mph) have caused approximately 90,000 homes without power and led authorities to cancel over 100 flights, according to local media.
The winds are impacting the whole southern region and lower areas of the North Island, per the country's meteorological service.
Officials in New Zealand have issued rare red wind warnings - the highest alert level - in key areas such as these major districts.
Locals have been advised to stay indoors, avoid travel, and prepare for additional utility disruptions.
Broad Destruction and Emergency Response
The power cut is primarily influencing homes predominantly in the South Island, while agencies say that power was being gradually reinstated.
Local media have indicated that in various locations homes have lost their roofs, while trees and electricity poles have been brought down by the gales.
Across Wellington, a person was fatally injured after being hit by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a individual was swept into approaching vehicles on a thoroughfare by a strong gust of wind, in a moment that was filmed in a viral dashcam video.
Air travel entering and leaving the metropolis have been cancelled due to the gusts, and various routes and public facilities are also closed.
At the same time authorities in Canterbury have announced a emergency situation, to support disaster response efforts.
Labor Protests During Extreme Conditions
The wild winds on Thursday coincide with tens of thousands of educators, medical professionals and government employees are participating in what has been called a "major walkout", calling for higher wages and enhanced employment terms.
However the severe conditions has forced them to alter some of their plans, with some outdoor rallies shifted to interior venues or cancelled.
Comparable winds are affecting the nearby nation, bringing a heatwave to the nation's interior regions.
Agencies have issued flame prohibitions for apprehension regarding wildfires.
