Intense winds attaining speeds of approximately 155km/h (96mph) have resulted in approximately 90,000 households lacking electricity and led officials to halt over 100 flights, based on local media.
The gales are influencing the whole South Island and lower areas of the North Island, according to the national weather agency.
Officials in New Zealand have released rare high-level wind alerts - the highest alert level - in central regions encompassing these major districts.
People have been advised to avoid going outside, refrain from journeys, and prepare for more utility disruptions.
Broad Damage and Emergency Response
The electricity loss seems to be impacting homes predominantly in the southern region, while authorities report that the electricity supply was being restored progressively.
Regional news have reported that in some places structures have suffered roof damage, while power lines and trees have been brought down by the gales.
Across Wellington, a person was fatally injured after being struck by a wooden fragment at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was swept into oncoming traffic on a thoroughfare by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Aircraft services entering and leaving the metropolis have been suspended due to the gusts, and some roads and libraries are shut down.
Simultaneously local leaders have issued a emergency situation, to support emergency management operations.
Labor Protests During Severe Weather
The powerful gales on this day coincide with numerous of teachers, doctors and other public workers are participating in what has been called a "significant labor action", demanding higher wages and enhanced employment terms.
However the intense climate has pressured them to change some of their plans, with several external protests relocated inside or cancelled.
Comparable winds are also sweeping the neighboring country, ushering in a period of extreme heat to the country's outback.
Authorities have declared fire bans for fear of wildfires.