Severe gusts reaching velocities of up to 155km/h (96mph) have left around 90,000 homes experiencing outages and compelled agencies to call off in excess of 100 aircraft departures, according to local media.
The winds are affecting the whole southern region and lower areas of the northern region, as stated by the weather forecasting body.
New Zealand authorities have released uncommon severe gust advisories - the top caution category - in central regions such as these major districts.
Residents have been encouraged to remain inside, refrain from journeys, and make arrangements for additional power and communication outages.
Widespread Damage and Crisis Measures
The power cut seems to be impacting homes predominantly in the southern region, although authorities say that power was being gradually reinstated.
Domestic outlets have stated that in certain areas homes have lost their roofs, while power lines and trees have been toppled by the gusts.
Across Wellington, a man was lost his life after being impacted by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a female was pushed toward moving cars on a thoroughfare by a intensive burst, in a event that was filmed in a viral dashcam video.
Aircraft services entering and leaving the metropolis have been suspended due to the winds, while certain highways and community centers are not operating.
Meanwhile Canterbury officials have announced a crisis declaration, to support disaster response efforts.
Strike Action During Severe Weather
The powerful gales on Thursday coincide with many of educators, medical professionals and government employees are engaged in what has been called a "mega strike", calling for better pay and working conditions.
However the extreme weather has forced them to alter some of their plans, with some outdoor rallies moved indoors or cancelled.
Similar gusts are also sweeping the nearby nation, ushering in a high-temperature event to the remote areas.
Agencies have issued burning restrictions for concern about forest fires.
