Powerful gusts hitting velocities of up to 155km/h (96mph) have caused nearly 90,000 households without power and compelled officials to call off in excess of 100 aircraft departures, according to regional news sources.
The gales are impacting the entire southern region and southern sections of the northern region, according to the weather forecasting body.
New Zealand authorities have released uncommon severe gust advisories - the top caution category - in central regions encompassing Wellington and Canterbury.
People have been encouraged to avoid going outside, refrain from journeys, and prepare for additional electricity and network failures.
Extensive Damage and Emergency Measures
The power cut seems to be impacting homes mostly in the South Island, although officials state that energy was being slowly brought back.
Regional news have indicated that in certain areas structures have suffered roof damage, and trees and electricity poles have been brought down by the winds.
Within the capital, a man was fatally injured after being struck by a tree branch at a popular trail walking spot on earlier this week.
Additionally in the city, a woman was swept into oncoming traffic on a road by a powerful blast, in a moment that was filmed in a viral dashcam video.
Air travel in and out of the metropolis have been cancelled due to the winds, while various routes and public facilities are not operating.
Simultaneously Canterbury officials have issued a state of emergency, to support emergency management operations.
Strike Action Amid Severe Conditions
These intense gusts on Thursday come as tens of thousands of teachers, doctors and other public workers are engaged in what has been called a "major walkout", requesting better pay and working conditions.
Yet the extreme weather has compelled them to alter some of their plans, with several external protests relocated inside or abandoned.
Like conditions are impacting the neighboring country, causing a heatwave to the country's outback.
Authorities have declared flame prohibitions for fear of wildfires.
