Powerful winds hitting speeds of up to 155km/h (96mph) have left approximately 90,000 properties experiencing outages and forced agencies to cancel in excess of 100 flights, based on local media.
The winds are affecting the whole South Island and southern sections of the North Island, as stated by the weather forecasting body.
New Zealand authorities have released uncommon high-level wind alerts - the top caution category - in key areas encompassing Wellington and Canterbury.
Residents have been urged to avoid going outside, avoid travel, and prepare for additional power and communication outages.
Broad Impact and Crisis Response
This outage seems to be impacting households predominantly in the southern region, although agencies report that energy was being gradually reinstated.
Domestic outlets have stated that in certain areas structures have suffered roof damage, and trees and electricity poles have been knocked down by the winds.
In Wellington, a man was lost his life after being struck by a tree branch at a frequent walking route on Tuesday.
Additionally in the city, a woman was blown onto approaching vehicles on a thoroughfare by a powerful blast, in a event that was captured in a popular vehicle recording.
Flights entering and leaving the metropolis have been suspended as a result of the winds, while some roads and libraries are also closed.
Meanwhile local leaders have announced a state of emergency, to assist recovery activities.
Strike Action Alongside Extreme Conditions
The wild winds on Thursday occur while tens of thousands of school staff, physicians and civil servants are participating in what has been described as a "major walkout", demanding better pay and working conditions.
Yet the extreme weather has pressured them to alter certain arrangements, with some outdoor rallies relocated inside or cancelled.
Similar gusts are affecting Australia, causing a heatwave to the remote areas.
Agencies have issued burning restrictions for concern about bushfires.