Intense gales attaining velocities of up to 155km/h (96mph) have resulted in approximately 90,000 homes experiencing outages and led agencies to call off over 100 flights, according to local media.
The winds are influencing the complete South Island and southern parts of the northern region, according to the weather forecasting body.
The nation's agencies have issued uncommon red wind warnings - the highest alert level - in central regions encompassing Wellington and Canterbury.
Locals have been encouraged to avoid going outside, avoid travel, and get ready for further electricity and network failures.
Widespread Destruction and Emergency Measures
The electricity loss appears to be affecting households mostly in the South Island, though officials report that the electricity supply was being slowly brought back.
Regional news have indicated that in certain areas roofs have been ripped off houses, and power lines and trees have been toppled by the winds.
Across Wellington, a man was fatally injured after being impacted by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a female was pushed toward approaching vehicles on a thoroughfare by a intensive burst, in a incident that was filmed in a viral dashcam video.
Air travel in and out of the metropolis have been cancelled as a result of the gusts, while various routes and public facilities are also closed.
At the same time local leaders have announced a state of emergency, to facilitate disaster response efforts.
Work Stoppages During Harsh Weather
These intense gusts on today coincide with many of teachers, doctors and other public workers are participating in what has been described as a "major walkout", requesting better pay and working conditions.
But the extreme weather has forced them to alter certain arrangements, with some outdoor rallies moved indoors or called off.
Similar gusts are also sweeping the nearby nation, causing a high-temperature event to the country's outback.
Authorities have declared burning restrictions for fear of forest fires.
