Intense gusts reaching speeds of as high as 155km/h (96mph) have left nearly 90,000 properties without power and compelled officials to cancel in excess of 100 aircraft departures, based on local media.
These gusts are affecting the complete South Island and southern parts of the northern region, according to the weather forecasting body.
The nation's agencies have released infrequent high-level wind alerts - the highest alert level - in core zones including Wellington and Canterbury.
Locals have been urged to avoid going outside, stay off roads, and get ready for further electricity and network failures.
Broad Destruction and Emergency Response
This outage appears to be affecting homes mainly in the southern region, while officials state that the electricity supply was being slowly brought back.
Domestic outlets have reported that in various locations homes have lost their roofs, while trees and electricity poles have been toppled by the winds.
Within the capital, a individual was lost his life after being struck by a falling limb at a popular trail walking spot on Tuesday.
Meanwhile in Wellington, a individual was blown onto moving cars on a thoroughfare by a powerful blast, in a moment that was captured in a popular vehicle recording.
Air travel in and out of the metropolis have been cancelled as a result of the gusts, whereas some roads and libraries are not operating.
Meanwhile local leaders have declared a state of emergency, to support emergency management operations.
Labor Protests Amid Extreme Weather
The powerful gales on Thursday occur while tens of thousands of teachers, doctors and other public workers take part in what has been called a "mega strike", calling for improved salaries and workplace environments.
But the severe conditions has forced them to modify various scheduled activities, with some outdoor rallies relocated inside or called off.
Similar gusts are also sweeping the nearby nation, bringing a high-temperature event to the remote areas.
Officials have announced burning restrictions for fear of wildfires.
