Powerful winds attaining velocities of up to 155km/h (96mph) have left approximately 90,000 homes lacking electricity and compelled agencies to cancel more than 100 air travel services, as reported by local media.
The gales are influencing the complete South Island and southern parts of the northern region, according to the weather forecasting body.
New Zealand authorities have released rare high-level wind alerts - the top caution category - in core zones including Wellington and Canterbury.
Locals have been urged to stay indoors, avoid travel, and get ready for additional power and communication outages.
Extensive Damage and Emergency Response
The power cut appears to be affecting homes mainly in the South Island, while agencies report that energy was being restored progressively.
Domestic outlets have reported that in various locations roofs have been ripped off houses, whereas utility poles and vegetation have been brought down by the winds.
Within the capital, a person was killed after being impacted by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a female was blown onto approaching vehicles on a thoroughfare by a intensive burst, in a incident that was recorded in a popular vehicle recording.
Aircraft services in and out of the city have been suspended as a result of the winds, and various routes and public facilities are not operating.
Simultaneously authorities in Canterbury have announced a crisis declaration, to facilitate disaster response efforts.
Labor Protests Alongside Severe Conditions
The wild winds on Thursday occur while tens of thousands of school staff, physicians and civil servants take part in what has been described as a "major walkout", demanding higher wages and enhanced employment terms.
But the severe conditions has forced them to alter certain arrangements, with some outdoor rallies relocated inside or abandoned.
Similar gusts are affecting the neighboring country, bringing a period of extreme heat to the country's outback.
Officials have issued flame prohibitions for fear of wildfires.
