Powerful gusts hitting velocities of as high as 155km/h (96mph) have resulted in around 90,000 households without power and forced officials to call off more than 100 flights, based on domestic outlets.
The gales are impacting the entire South Island and southern sections of the North Island, per the weather forecasting body.
Officials in New Zealand have released infrequent high-level wind alerts - the highest alert level - in key areas encompassing Canterbury and Wellington.
Locals have been encouraged to stay indoors, refrain from journeys, and prepare for further utility disruptions.
Extensive Damage and Crisis Measures
The power cut is primarily influencing homes predominantly in the South Island, while authorities say that the electricity supply was being restored progressively.
Local media have indicated that in certain areas structures have suffered roof damage, while power lines and trees have been knocked down by the gales.
Across Wellington, a man was fatally injured after being hit by a wooden fragment at a frequent walking route on Tuesday.
Additionally in the city, a woman was pushed toward approaching vehicles on a street by a intensive burst, in a incident that was recorded in a widely shared car camera footage.
Air travel entering and leaving the urban area have been halted due to the winds, whereas certain highways and community centers are shut down.
Simultaneously local leaders have announced a state of emergency, to support recovery activities.
Strike Action Alongside Severe Conditions
These intense gusts on today coincide with tens of thousands of educators, medical professionals and government employees take part in what has been called a "significant labor action", calling for improved salaries and workplace environments.
However the intense climate has forced them to change some of their plans, with some outdoor rallies relocated inside or cancelled.
Comparable winds are also sweeping Australia, ushering in a high-temperature event to the nation's interior regions.
Officials have declared burning restrictions for apprehension regarding bushfires.
