Powerful gusts hitting velocities of up to 155km/h (96mph) have resulted in around 90,000 households experiencing outages and led officials to halt more than 100 aircraft departures, according to domestic outlets.
The gales are influencing the whole southern region and lower areas of the North Island, per the weather forecasting body.
New Zealand authorities have issued uncommon high-level wind alerts - the highest alert level - in key areas encompassing these major districts.
People have been advised to remain inside, refrain from journeys, and prepare for further electricity and network failures.
Extensive Damage and Emergency Response
The power cut appears to be affecting households predominantly in the southern region, though officials report that power was being slowly brought back.
Regional news have reported that in some places structures have suffered roof damage, whereas utility poles and vegetation have been brought down by the gales.
Within the capital, a person was fatally injured after being struck by a tree branch at a popular trail walking spot on Tuesday.
Meanwhile in Wellington, a woman was blown onto oncoming traffic on a street by a powerful blast, in a incident that was filmed in a viral dashcam video.
Air travel in and out of the city have been cancelled due to the winds, while certain highways and community centers are also closed.
Simultaneously local leaders have announced a state of emergency, to facilitate disaster response efforts.
Work Stoppages During Harsh Conditions
The powerful gales on Thursday coincide with numerous of teachers, doctors and other public workers are participating in what has been called a "significant labor action", calling for improved salaries and workplace environments.
But the intense climate has pressured them to change various scheduled activities, with various open-air gatherings relocated inside or cancelled.
Like conditions are also sweeping the neighboring country, causing a period of extreme heat to the nation's interior regions.
Officials have issued flame prohibitions for concern about bushfires.
