Intense winds hitting speeds of approximately 155km/h (96mph) have caused nearly 90,000 properties experiencing outages and led authorities to halt over 100 flights, according to regional news sources.
The gales are impacting the complete South Island and lower areas of the North Island, as stated by the weather forecasting body.
New Zealand authorities have issued rare red wind warnings - the top caution category - in central regions encompassing Wellington and Canterbury.
Residents have been advised to avoid going outside, refrain from journeys, and get ready for further power and communication outages.
Broad Impact and Emergency Measures
The power cut is primarily influencing residences predominantly in the southern region, though agencies say that the electricity supply was being restored progressively.
Local media have indicated that in various locations structures have suffered roof damage, and trees and electricity poles have been knocked down by the gales.
Within the capital, a individual was lost his life after being impacted by a falling limb at a well-known hiking path on earlier this week.
Also in the capital, a individual was swept into approaching vehicles on a street by a strong gust of wind, in a event that was recorded in a viral dashcam video.
Aircraft services entering and leaving the metropolis have been halted due to the gusts, and certain highways and community centers are shut down.
Meanwhile authorities in Canterbury have declared a crisis declaration, to assist disaster response efforts.
Labor Protests Amid Severe Weather
The powerful gales on today coincide with tens of thousands of educators, medical professionals and government employees take part in what has been termed a "significant labor action", demanding better pay and working conditions.
But the intense climate has forced them to change some of their plans, with several external protests shifted to interior venues or called off.
Like conditions are impacting the neighboring country, causing a high-temperature event to the country's outback.
Authorities have announced burning restrictions for concern about bushfires.