Intense winds hitting velocities of approximately 155km/h (96mph) have caused nearly 90,000 properties without power and led agencies to cancel more than 100 aircraft departures, based on regional news sources.
The gales are impacting the whole South Island and southern sections of the North Island, according to the country's meteorological service.
New Zealand authorities have released uncommon red wind warnings - the most severe warning - in key areas including Canterbury and Wellington.
Locals have been urged to remain inside, refrain from journeys, and make arrangements for more electricity and network failures.
Extensive Damage and Emergency Measures
The power cut seems to be impacting homes predominantly in the southern region, though agencies state that energy was being slowly brought back.
Domestic outlets have reported that in various locations homes have lost their roofs, whereas power lines and trees have been brought down by the winds.
Within the capital, a man was fatally injured after being impacted by a falling limb at a popular trail walking spot on earlier this week.
Additionally in the city, a woman was blown onto approaching vehicles on a thoroughfare by a strong gust of wind, in a incident that was filmed in a widely shared car camera footage.
Air travel to and from the city have been cancelled because of the gusts, while certain highways and community centers are also closed.
Meanwhile Canterbury officials have declared a emergency situation, to facilitate emergency management operations.
Labor Protests Amid Extreme Weather
These intense gusts on Thursday occur while numerous of teachers, doctors and other public workers are engaged in what has been described as a "mega strike", demanding improved salaries and workplace environments.
But the extreme weather has compelled them to modify various scheduled activities, with various open-air gatherings shifted to interior venues or called off.
Like conditions are affecting the nearby nation, ushering in a heatwave to the country's outback.
Officials have announced burning restrictions for fear of bushfires.
