Powerful winds hitting velocities of approximately 155km/h (96mph) have left around 90,000 households lacking electricity and compelled officials to cancel more than 100 flights, according to local media.
The winds are impacting the complete South Island and southern sections of the North Island, as stated by the national weather agency.
New Zealand authorities have announced rare high-level wind alerts - the most severe warning - in key areas including these major districts.
Locals have been encouraged to stay indoors, refrain from journeys, and get ready for additional utility disruptions.
Broad Impact and Crisis Response
The electricity loss appears to be affecting homes predominantly in the South Island, although agencies say that the electricity supply was being slowly brought back.
Domestic outlets have reported that in some places roofs have been ripped off houses, while power lines and trees have been brought down by the winds.
Within the capital, a man was killed after being impacted by a tree branch at a frequent walking route on Tuesday.
Meanwhile in Wellington, a female was pushed toward moving cars on a thoroughfare by a powerful blast, in a moment that was filmed in a viral dashcam video.
Flights in and out of the urban area have been suspended due to the gusts, and certain highways and community centers are shut down.
Meanwhile Canterbury officials have issued a emergency situation, to support disaster response efforts.
Labor Protests Amid Harsh Conditions
The powerful gales on Thursday occur while numerous of educators, medical professionals and government employees are participating in what has been termed a "mega strike", requesting improved salaries and workplace environments.
However the severe conditions has forced them to alter various scheduled activities, with various open-air gatherings relocated inside or abandoned.
Similar gusts are affecting Australia, ushering in a period of extreme heat to the nation's interior regions.
Agencies have declared flame prohibitions for fear of forest fires.