Powerful gales hitting velocities of up to 155km/h (96mph) have resulted in around 90,000 homes lacking electricity and forced authorities to call off more than 100 flights, as reported by local media.
These gusts are impacting the whole South Island and lower areas of the North Island, per the national weather agency.
Officials in New Zealand have released uncommon high-level wind alerts - the highest alert level - in key areas including Wellington and Canterbury.
Locals have been urged to remain inside, avoid travel, and prepare for additional power and communication outages.
Broad Destruction and Crisis Measures
The power cut appears to be affecting homes predominantly in the South Island, although agencies say that power was being gradually reinstated.
Regional news have indicated that in certain areas structures have suffered roof damage, while power lines and trees have been toppled by the gales.
In Wellington, a man was killed after being impacted by a tree branch at a well-known hiking path on Tuesday.
Also in the capital, a individual was blown onto moving cars on a road by a strong gust of wind, in a incident that was captured in a viral dashcam video.
Flights in and out of the metropolis have been cancelled because of the gusts, and certain highways and community centers are shut down.
Simultaneously Canterbury officials have declared a state of emergency, to facilitate recovery activities.
Work Stoppages Amid Harsh Weather
The wild winds on this day coincide with many of school staff, physicians and civil servants are participating in what has been described as a "major walkout", requesting higher wages and enhanced employment terms.
But the severe conditions has forced them to alter some of their plans, with some outdoor rallies moved indoors or abandoned.
Like conditions are also sweeping the neighboring country, causing a period of extreme heat to the country's outback.
Agencies have announced burning restrictions for fear of wildfires.
