Intense winds attaining velocities of up to 155km/h (96mph) have caused nearly 90,000 properties without power and led agencies to halt over 100 air travel services, according to local media.
The winds are impacting the whole South Island and lower areas of the North Island, as stated by the country's meteorological service.
New Zealand authorities have issued rare red wind warnings - the highest alert level - in core zones encompassing Canterbury and Wellington.
Residents have been urged to remain inside, avoid travel, and get ready for further power and communication outages.
Widespread Damage and Crisis Measures
This outage seems to be impacting residences mostly in the South Island, though agencies say that energy was being restored progressively.
Regional news have reported that in some places homes have lost their roofs, whereas utility poles and vegetation have been brought down by the winds.
In Wellington, a person was killed after being struck by a wooden fragment at a popular trail walking spot on earlier this week.
Meanwhile in Wellington, a woman was blown onto approaching vehicles on a road by a strong gust of wind, in a event that was captured in a widely shared car camera footage.
Aircraft services entering and leaving the metropolis have been halted as a result of the gusts, while some roads and libraries are also closed.
Simultaneously Canterbury officials have announced a crisis declaration, to support emergency management operations.
Strike Action During Harsh Weather
The powerful gales on today occur while many of educators, medical professionals and government employees take part in what has been called a "mega strike", demanding better pay and working conditions.
Yet the severe conditions has compelled them to alter various scheduled activities, with some outdoor rallies relocated inside or cancelled.
Like conditions are also sweeping the nearby nation, bringing a period of extreme heat to the country's outback.
Officials have declared fire bans for concern about wildfires.
