Intense gusts reaching speeds of up to 155km/h (96mph) have resulted in approximately 90,000 homes lacking electricity and forced authorities to halt over 100 flights, based on local media.
The winds are influencing the entire South Island and southern sections of the North Island, per the country's meteorological service.
Officials in New Zealand have announced infrequent red wind warnings - the top caution category - in central regions including Wellington and Canterbury.
Locals have been urged to stay indoors, refrain from journeys, and get ready for additional power and communication outages.
Broad Destruction and Emergency Response
The electricity loss is primarily influencing households predominantly in the southern region, while officials state that energy was being gradually reinstated.
Local media have reported that in some places homes have lost their roofs, whereas trees and electricity poles have been knocked down by the gusts.
Across Wellington, a man was fatally injured after being impacted by a wooden fragment at a popular trail walking spot on Tuesday.
Additionally in the city, a female was pushed toward approaching vehicles on a street by a strong gust of wind, in a event that was recorded in a viral dashcam video.
Flights to and from the urban area have been halted due to the weather, whereas certain highways and community centers are also closed.
At the same time local leaders have announced a crisis declaration, to support disaster response efforts.
Work Stoppages During Extreme Conditions
These intense gusts on Thursday coincide with tens of thousands of teachers, doctors and other public workers are participating in what has been termed a "mega strike", requesting improved salaries and workplace environments.
Yet the extreme weather has forced them to modify certain arrangements, with various open-air gatherings moved indoors or called off.
Similar gusts are impacting the neighboring country, bringing a high-temperature event to the remote areas.
Officials have issued flame prohibitions for fear of forest fires.