Intense winds attaining speeds of as high as 155km/h (96mph) have resulted in nearly 90,000 properties without power and led officials to cancel more than 100 aircraft departures, according to domestic outlets.
The winds are affecting the complete South Island and southern sections of the northern region, according to the weather forecasting body.
New Zealand authorities have announced uncommon red wind warnings - the top caution category - in core zones encompassing these major districts.
People have been urged to remain inside, stay off roads, and prepare for further utility disruptions.
Broad Destruction and Crisis Response
The power cut appears to be affecting households mostly in the South Island, though officials state that energy was being restored progressively.
Domestic outlets have reported that in certain areas structures have suffered roof damage, while trees and electricity poles have been knocked down by the winds.
Across Wellington, a person was killed after being struck by a tree branch at a well-known hiking path on Tuesday.
Also in the capital, a female was blown onto moving cars on a thoroughfare by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Aircraft services in and out of the metropolis have been suspended due to the gusts, while certain highways and community centers are not operating.
Simultaneously authorities in Canterbury have issued a emergency situation, to support disaster response efforts.
Labor Protests During Extreme Conditions
The wild winds on today occur while many of educators, medical professionals and government employees are engaged in what has been termed a "significant labor action", calling for improved salaries and workplace environments.
Yet the intense climate has forced them to change certain arrangements, with some outdoor rallies moved indoors or called off.
Comparable winds are also sweeping Australia, ushering in a heatwave to the nation's interior regions.
Officials have declared flame prohibitions for apprehension regarding wildfires.
