Intense gusts reaching velocities of as high as 155km/h (96mph) have left approximately 90,000 properties without power and forced agencies to cancel more than 100 aircraft departures, according to regional news sources.
The winds are impacting the complete South Island and lower areas of the North Island, per the country's meteorological service.
New Zealand authorities have announced uncommon red wind warnings - the most severe warning - in central regions such as Wellington and Canterbury.
People have been urged to avoid going outside, refrain from journeys, and prepare for further utility disruptions.
Widespread Damage and Emergency Response
This outage seems to be impacting residences mostly in the South Island, although authorities report that the electricity supply was being restored progressively.
Local media have indicated that in some places structures have suffered roof damage, while power lines and trees have been knocked down by the gales.
In Wellington, a individual was lost his life after being hit by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a woman was blown onto approaching vehicles on a thoroughfare by a strong gust of wind, in a moment that was recorded in a widely shared car camera footage.
Air travel entering and leaving the urban area have been halted as a result of the weather, and various routes and public facilities are also closed.
Meanwhile local leaders have announced a crisis declaration, to assist emergency management operations.
Strike Action Alongside Extreme Conditions
These intense gusts on this day come as many of educators, medical professionals and government employees are engaged in what has been described as a "major walkout", calling for better pay and working conditions.
However the extreme weather has forced them to alter various scheduled activities, with various open-air gatherings relocated inside or cancelled.
Similar gusts are impacting Australia, causing a heatwave to the country's outback.
Officials have declared flame prohibitions for concern about bushfires.