Intense winds reaching velocities of approximately 155km/h (96mph) have resulted in around 90,000 homes lacking electricity and compelled agencies to call off over 100 aircraft departures, as reported by regional news sources.
The gales are impacting the entire South Island and lower areas of the North Island, according to the weather forecasting body.
The nation's agencies have issued rare red wind warnings - the top caution category - in central regions including Wellington and Canterbury.
Residents have been advised to remain inside, stay off roads, and get ready for more utility disruptions.
Broad Impact and Crisis Measures
The power cut seems to be impacting residences predominantly in the South Island, though authorities report that the electricity supply was being gradually reinstated.
Local media have reported that in certain areas structures have suffered roof damage, whereas trees and electricity poles have been brought down by the gusts.
Across Wellington, a man was killed after being struck by a falling limb at a frequent walking route on earlier this week.
Meanwhile in Wellington, a individual was blown onto moving cars on a thoroughfare by a intensive burst, in a incident that was filmed in a widely shared car camera footage.
Aircraft services to and from the city have been suspended because of the gusts, while certain highways and community centers are not operating.
Meanwhile Canterbury officials have announced a crisis declaration, to assist disaster response efforts.
Work Stoppages Alongside Extreme Conditions
The wild winds on Thursday occur while tens of thousands of educators, medical professionals and government employees are participating in what has been termed a "major walkout", calling for better pay and working conditions.
However the intense climate has compelled them to change various scheduled activities, with several external protests relocated inside or abandoned.
Similar gusts are affecting Australia, causing a heatwave to the country's outback.
Authorities have issued flame prohibitions for fear of wildfires.
