Severe gusts attaining velocities of up to 155km/h (96mph) have left around 90,000 households experiencing outages and compelled officials to call off more than 100 aircraft departures, as reported by domestic outlets.
The winds are affecting the complete South Island and lower areas of the northern region, as stated by the weather forecasting body.
New Zealand authorities have issued uncommon high-level wind alerts - the most severe warning - in core zones encompassing these major districts.
Residents have been urged to remain inside, avoid travel, and get ready for additional utility disruptions.
Widespread Destruction and Emergency Response
The power cut seems to be impacting homes predominantly in the South Island, although officials report that energy was being restored progressively.
Local media have reported that in some places roofs have been ripped off houses, whereas power lines and trees have been brought down by the gales.
In Wellington, a individual was killed after being hit by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a woman was swept into oncoming traffic on a thoroughfare by a intensive burst, in a moment that was captured in a popular vehicle recording.
Aircraft services in and out of the urban area have been suspended because of the winds, whereas certain highways and community centers are also closed.
Meanwhile local leaders have announced a emergency situation, to assist recovery activities.
Labor Protests Amid Severe Weather
These intense gusts on Thursday come as numerous of teachers, doctors and other public workers take part in what has been termed a "significant labor action", calling for better pay and working conditions.
But the extreme weather has compelled them to alter some of their plans, with several external protests moved indoors or called off.
Like conditions are also sweeping the neighboring country, bringing a heatwave to the nation's interior regions.
Agencies have announced fire bans for fear of bushfires.
