Severe gales attaining velocities of as high as 155km/h (96mph) have resulted in approximately 90,000 households without power and forced agencies to halt over 100 aircraft departures, as reported by domestic outlets.
These gusts are influencing the whole southern region and lower areas of the North Island, according to the country's meteorological service.
The nation's agencies have issued infrequent red wind warnings - the highest alert level - in central regions including Wellington and Canterbury.
Locals have been encouraged to avoid going outside, avoid travel, and prepare for further electricity and network failures.
Broad Impact and Crisis Measures
The power cut appears to be affecting residences predominantly in the southern region, although officials state that the electricity supply was being restored progressively.
Local media have indicated that in some places homes have lost their roofs, whereas trees and electricity poles have been knocked down by the gusts.
Within the capital, a person was fatally injured after being impacted by a falling limb at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was blown onto approaching vehicles on a street by a strong gust of wind, in a incident that was filmed in a viral dashcam video.
Air travel to and from the city have been suspended as a result of the winds, while certain highways and community centers are also closed.
Simultaneously Canterbury officials have issued a emergency situation, to facilitate recovery activities.
Strike Action Alongside Harsh Conditions
The wild winds on Thursday come as tens of thousands of school staff, physicians and civil servants are engaged in what has been described as a "significant labor action", requesting improved salaries and workplace environments.
Yet the extreme weather has pressured them to alter various scheduled activities, with some outdoor rallies relocated inside or cancelled.
Like conditions are affecting the nearby nation, causing a high-temperature event to the remote areas.
Authorities have announced fire bans for concern about wildfires.