Powerful gusts attaining speeds of as high as 155km/h (96mph) have caused around 90,000 households without power and forced officials to call off in excess of 100 flights, based on local media.
These gusts are influencing the whole southern region and lower areas of the North Island, according to the national weather agency.
The nation's agencies have issued rare high-level wind alerts - the top caution category - in central regions including Wellington and Canterbury.
Locals have been advised to stay indoors, stay off roads, and get ready for additional power and communication outages.
Widespread Damage and Crisis Response
The electricity loss appears to be affecting homes predominantly in the southern region, while authorities report that the electricity supply was being slowly brought back.
Domestic outlets have reported that in various locations structures have suffered roof damage, and trees and electricity poles have been toppled by the gales.
Across Wellington, a individual was fatally injured after being hit by a tree branch at a well-known hiking path on Tuesday.
Additionally in the city, a female was blown onto approaching vehicles on a road by a intensive burst, in a incident that was filmed in a viral dashcam video.
Air travel entering and leaving the metropolis have been suspended as a result of the winds, whereas some roads and libraries are shut down.
At the same time local leaders have declared a state of emergency, to support disaster response efforts.
Work Stoppages Amid Harsh Conditions
The wild winds on Thursday coincide with many of school staff, physicians and civil servants are engaged in what has been called a "major walkout", demanding higher wages and enhanced employment terms.
However the severe conditions has compelled them to alter certain arrangements, with various open-air gatherings relocated inside or abandoned.
Like conditions are also sweeping the nearby nation, ushering in a heatwave to the country's outback.
Authorities have declared burning restrictions for fear of bushfires.
