Powerful winds hitting speeds of up to 155km/h (96mph) have caused around 90,000 homes without power and forced officials to call off over 100 aircraft departures, as reported by regional news sources.
The winds are affecting the complete South Island and lower areas of the North Island, as stated by the weather forecasting body.
Officials in New Zealand have issued uncommon high-level wind alerts - the most severe warning - in key areas including Wellington and Canterbury.
Residents have been encouraged to avoid going outside, refrain from journeys, and prepare for further electricity and network failures.
Broad Impact and Crisis Measures
The power cut seems to be impacting residences mainly in the South Island, though officials report that energy was being gradually reinstated.
Local media have reported that in certain areas roofs have been ripped off houses, whereas trees and electricity poles have been toppled by the gusts.
Within the capital, a person was killed after being struck by a falling limb at a well-known hiking path on Tuesday.
Also in the capital, a individual was blown onto moving cars on a street by a strong gust of wind, in a event that was recorded in a widely shared car camera footage.
Aircraft services in and out of the urban area have been halted because of the weather, while certain highways and community centers are shut down.
Simultaneously local leaders have issued a emergency situation, to assist emergency management operations.
Labor Protests During Harsh Weather
The powerful gales on today coincide with tens of thousands of teachers, doctors and other public workers take part in what has been termed a "significant labor action", calling for higher wages and enhanced employment terms.
But the extreme weather has compelled them to change certain arrangements, with several external protests relocated inside or abandoned.
Comparable winds are affecting the nearby nation, ushering in a period of extreme heat to the nation's interior regions.
Officials have declared burning restrictions for fear of wildfires.