Severe gales hitting velocities of up to 155km/h (96mph) have resulted in around 90,000 properties without power and forced officials to halt more than 100 flights, as reported by local media.
These gusts are influencing the entire southern region and lower areas of the North Island, as stated by the national weather agency.
The nation's agencies have announced infrequent red wind warnings - the most severe warning - in core zones such as Wellington and Canterbury.
Locals have been advised to avoid going outside, refrain from journeys, and make arrangements for more utility disruptions.
Widespread Damage and Crisis Measures
The electricity loss is primarily influencing residences mostly in the South Island, although authorities say that energy was being slowly brought back.
Regional news have reported that in various locations structures have suffered roof damage, and trees and electricity poles have been knocked down by the gusts.
In Wellington, a man was fatally injured after being hit by a wooden fragment at a well-known hiking path on Tuesday.
Additionally in the city, a female was blown onto oncoming traffic on a road by a intensive burst, in a incident that was captured in a widely shared car camera footage.
Aircraft services in and out of the city have been cancelled due to the winds, while certain highways and community centers are also closed.
Simultaneously local leaders have issued a state of emergency, to support disaster response efforts.
Labor Protests During Harsh Conditions
The powerful gales on this day come as tens of thousands of school staff, physicians and civil servants are participating in what has been called a "major walkout", requesting improved salaries and workplace environments.
However the severe conditions has compelled them to alter certain arrangements, with various open-air gatherings relocated inside or abandoned.
Like conditions are also sweeping Australia, ushering in a high-temperature event to the nation's interior regions.
Agencies have declared fire bans for fear of forest fires.