Powerful winds hitting speeds of approximately 155km/h (96mph) have left nearly 90,000 homes without power and forced agencies to call off over 100 flights, according to local media.
The winds are impacting the whole southern region and southern parts of the northern region, per the weather forecasting body.
The nation's agencies have announced infrequent red wind warnings - the most severe warning - in central regions such as these major districts.
Locals have been urged to remain inside, avoid travel, and get ready for further utility disruptions.
Widespread Impact and Crisis Measures
The electricity loss appears to be affecting homes mainly in the South Island, though officials report that power was being gradually reinstated.
Local media have indicated that in some places homes have lost their roofs, and trees and electricity poles have been knocked down by the gales.
Within the capital, a person was lost his life after being struck by a tree branch at a popular trail walking spot on Tuesday.
Meanwhile in Wellington, a woman was pushed toward moving cars on a road by a powerful blast, in a incident that was filmed in a popular vehicle recording.
Air travel in and out of the urban area have been cancelled due to the winds, and some roads and libraries are not operating.
Simultaneously local leaders have issued a crisis declaration, to support disaster response efforts.
Work Stoppages Amid Harsh Weather
These intense gusts on Thursday coincide with numerous of teachers, doctors and other public workers are engaged in what has been described as a "major walkout", calling for better pay and working conditions.
Yet the severe conditions has forced them to modify some of their plans, with several external protests moved indoors or called off.
Like conditions are also sweeping the nearby nation, ushering in a period of extreme heat to the country's outback.
Officials have declared burning restrictions for concern about wildfires.
