Severe winds reaching velocities of approximately 155km/h (96mph) have caused nearly 90,000 properties experiencing outages and led officials to halt in excess of 100 aircraft departures, as reported by local media.
The gales are affecting the complete South Island and southern sections of the North Island, as stated by the weather forecasting body.
The nation's agencies have issued uncommon red wind warnings - the highest alert level - in key areas including Wellington and Canterbury.
Locals have been encouraged to remain inside, avoid travel, and make arrangements for more utility disruptions.
Broad Impact and Emergency Response
This outage seems to be impacting households mainly in the South Island, while authorities report that the electricity supply was being restored progressively.
Domestic outlets have indicated that in certain areas structures have suffered roof damage, whereas utility poles and vegetation have been knocked down by the gales.
Across Wellington, a person was lost his life after being impacted by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a female was pushed toward moving cars on a thoroughfare by a strong gust of wind, in a event that was filmed in a popular vehicle recording.
Aircraft services in and out of the metropolis have been halted due to the gusts, while some roads and libraries are shut down.
At the same time authorities in Canterbury have declared a crisis declaration, to support emergency management operations.
Labor Protests Alongside Severe Weather
The wild winds on Thursday occur while many of educators, medical professionals and government employees take part in what has been called a "major walkout", calling for higher wages and enhanced employment terms.
Yet the severe conditions has compelled them to alter some of their plans, with some outdoor rallies relocated inside or cancelled.
Like conditions are affecting Australia, causing a heatwave to the nation's interior regions.
Officials have issued burning restrictions for fear of forest fires.