Powerful gales hitting velocities of approximately 155km/h (96mph) have left approximately 90,000 households lacking electricity and forced officials to cancel more than 100 air travel services, according to local media.
These gusts are influencing the entire southern region and southern parts of the North Island, per the weather forecasting body.
The nation's agencies have issued uncommon red wind warnings - the highest alert level - in core zones such as Wellington and Canterbury.
Locals have been urged to stay indoors, refrain from journeys, and prepare for additional electricity and network failures.
Widespread Impact and Emergency Response
This outage is primarily influencing households mainly in the southern region, while authorities state that the electricity supply was being slowly brought back.
Domestic outlets have reported that in some places homes have lost their roofs, whereas utility poles and vegetation have been knocked down by the gales.
In Wellington, a man was fatally injured after being hit by a wooden fragment at a well-known hiking path on Tuesday.
Also in the capital, a female was swept into oncoming traffic on a road by a intensive burst, in a incident that was captured in a widely shared car camera footage.
Aircraft services entering and leaving the metropolis have been cancelled due to the winds, while certain highways and community centers are not operating.
Simultaneously Canterbury officials have declared a crisis declaration, to assist emergency management operations.
Work Stoppages Amid Harsh Weather
These intense gusts on this day come as tens of thousands of school staff, physicians and civil servants are engaged in what has been called a "mega strike", calling for improved salaries and workplace environments.
Yet the intense climate has compelled them to modify some of their plans, with several external protests shifted to interior venues or abandoned.
Similar gusts are affecting Australia, causing a heatwave to the nation's interior regions.
Agencies have issued flame prohibitions for fear of forest fires.