Severe gales hitting speeds of up to 155km/h (96mph) have left nearly 90,000 properties experiencing outages and led agencies to call off more than 100 flights, based on local media.
The winds are influencing the complete South Island and southern parts of the North Island, as stated by the country's meteorological service.
The nation's agencies have announced rare red wind warnings - the highest alert level - in key areas encompassing these major districts.
Locals have been encouraged to stay indoors, stay off roads, and prepare for further utility disruptions.
Widespread Destruction and Crisis Measures
The power cut appears to be affecting households mostly in the South Island, while agencies report that energy was being restored progressively.
Local media have indicated that in certain areas structures have suffered roof damage, whereas trees and electricity poles have been toppled by the gales.
Across Wellington, a person was lost his life after being struck by a wooden fragment at a frequent walking route on Tuesday.
Additionally in the city, a woman was pushed toward oncoming traffic on a thoroughfare by a intensive burst, in a event that was captured in a popular vehicle recording.
Air travel entering and leaving the city have been suspended due to the weather, and certain highways and community centers are also closed.
Simultaneously Canterbury officials have declared a crisis declaration, to facilitate emergency management operations.
Labor Protests Alongside Severe Weather
The wild winds on this day coincide with numerous of school staff, physicians and civil servants are participating in what has been called a "mega strike", requesting higher wages and enhanced employment terms.
Yet the severe conditions has compelled them to modify some of their plans, with several external protests relocated inside or called off.
Comparable winds are affecting Australia, ushering in a high-temperature event to the country's outback.
Agencies have declared flame prohibitions for fear of wildfires.