Powerful gales attaining velocities of approximately 155km/h (96mph) have resulted in around 90,000 properties experiencing outages and compelled officials to halt more than 100 flights, based on domestic outlets.
The winds are influencing the entire South Island and southern parts of the northern region, as stated by the national weather agency.
The nation's agencies have released uncommon red wind warnings - the top caution category - in central regions encompassing Canterbury and Wellington.
People have been encouraged to stay indoors, avoid travel, and make arrangements for further electricity and network failures.
Extensive Impact and Crisis Response
The power cut appears to be affecting homes mostly in the southern region, while authorities state that the electricity supply was being slowly brought back.
Local media have reported that in certain areas structures have suffered roof damage, and power lines and trees have been brought down by the gales.
In Wellington, a person was fatally injured after being struck by a falling limb at a well-known hiking path on earlier this week.
Additionally in the city, a woman was swept into moving cars on a street by a powerful blast, in a incident that was recorded in a widely shared car camera footage.
Air travel entering and leaving the metropolis have been suspended because of the winds, whereas various routes and public facilities are not operating.
At the same time Canterbury officials have declared a state of emergency, to assist disaster response efforts.
Work Stoppages Amid Severe Conditions
The powerful gales on this day come as tens of thousands of school staff, physicians and civil servants take part in what has been described as a "mega strike", demanding better pay and working conditions.
However the severe conditions has compelled them to alter some of their plans, with various open-air gatherings moved indoors or cancelled.
Like conditions are affecting the nearby nation, ushering in a high-temperature event to the nation's interior regions.
Agencies have issued fire bans for apprehension regarding wildfires.