Intense gusts hitting speeds of approximately 155km/h (96mph) have left around 90,000 homes lacking electricity and led officials to cancel over 100 air travel services, based on local media.
These gusts are influencing the entire southern region and southern parts of the North Island, per the country's meteorological service.
The nation's agencies have released rare high-level wind alerts - the most severe warning - in key areas such as Wellington and Canterbury.
Locals have been advised to stay indoors, stay off roads, and get ready for additional utility disruptions.
Widespread Damage and Emergency Response
The electricity loss seems to be impacting households mainly in the southern region, though authorities state that energy was being gradually reinstated.
Local media have indicated that in some places structures have suffered roof damage, while trees and electricity poles have been knocked down by the winds.
Across Wellington, a individual was killed after being hit by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a female was swept into moving cars on a road by a powerful blast, in a event that was filmed in a viral dashcam video.
Air travel in and out of the city have been cancelled as a result of the weather, while various routes and public facilities are shut down.
At the same time local leaders have declared a crisis declaration, to facilitate disaster response efforts.
Strike Action During Extreme Conditions
These intense gusts on this day occur while many of teachers, doctors and other public workers take part in what has been called a "major walkout", calling for better pay and working conditions.
However the extreme weather has forced them to alter various scheduled activities, with several external protests relocated inside or called off.
Similar gusts are affecting Australia, causing a period of extreme heat to the country's outback.
Officials have announced fire bans for apprehension regarding forest fires.