Intense gales hitting speeds of as high as 155km/h (96mph) have resulted in around 90,000 households lacking electricity and forced agencies to call off more than 100 aircraft departures, as reported by domestic outlets.
The winds are affecting the complete southern region and lower areas of the northern region, per the country's meteorological service.
The nation's agencies have issued rare severe gust advisories - the highest alert level - in core zones such as Wellington and Canterbury.
Residents have been urged to avoid going outside, avoid travel, and prepare for additional electricity and network failures.
Extensive Damage and Emergency Response
The electricity loss appears to be affecting homes mainly in the southern region, although authorities report that power was being slowly brought back.
Domestic outlets have reported that in some places structures have suffered roof damage, and power lines and trees have been knocked down by the winds.
In Wellington, a man was fatally injured after being impacted by a tree branch at a frequent walking route on Tuesday.
Additionally in the city, a female was pushed toward moving cars on a street by a powerful blast, in a event that was recorded in a viral dashcam video.
Air travel entering and leaving the urban area have been suspended due to the winds, whereas certain highways and community centers are also closed.
Simultaneously local leaders have announced a crisis declaration, to facilitate recovery activities.
Labor Protests During Extreme Conditions
The wild winds on this day occur while many of teachers, doctors and other public workers are participating in what has been called a "mega strike", demanding improved salaries and workplace environments.
But the severe conditions has compelled them to alter various scheduled activities, with some outdoor rallies moved indoors or abandoned.
Like conditions are also sweeping the neighboring country, ushering in a high-temperature event to the nation's interior regions.
Agencies have declared burning restrictions for fear of forest fires.