Severe winds reaching speeds of as high as 155km/h (96mph) have resulted in nearly 90,000 properties lacking electricity and compelled officials to cancel over 100 flights, based on regional news sources.
The gales are impacting the whole southern region and southern sections of the North Island, according to the weather forecasting body.
New Zealand authorities have issued uncommon high-level wind alerts - the top caution category - in central regions such as these major districts.
Residents have been urged to avoid going outside, avoid travel, and prepare for more electricity and network failures.
Extensive Destruction and Crisis Measures
The power cut appears to be affecting households mainly in the South Island, although authorities say that the electricity supply was being gradually reinstated.
Regional news have indicated that in some places homes have lost their roofs, and power lines and trees have been toppled by the gusts.
In Wellington, a person was killed after being impacted by a wooden fragment at a well-known hiking path on Tuesday.
Additionally in the city, a woman was pushed toward approaching vehicles on a thoroughfare by a strong gust of wind, in a event that was filmed in a widely shared car camera footage.
Aircraft services entering and leaving the city have been suspended because of the weather, and some roads and libraries are also closed.
At the same time authorities in Canterbury have issued a emergency situation, to assist recovery activities.
Strike Action During Harsh Weather
These intense gusts on this day come as numerous of educators, medical professionals and government employees are engaged in what has been described as a "major walkout", demanding higher wages and enhanced employment terms.
However the severe conditions has pressured them to modify certain arrangements, with various open-air gatherings shifted to interior venues or abandoned.
Comparable winds are also sweeping the nearby nation, ushering in a heatwave to the nation's interior regions.
Authorities have issued fire bans for apprehension regarding forest fires.