Powerful winds hitting velocities of as high as 155km/h (96mph) have left around 90,000 households experiencing outages and compelled officials to halt over 100 air travel services, based on regional news sources.
The winds are affecting the complete South Island and southern sections of the North Island, according to the country's meteorological service.
New Zealand authorities have released infrequent severe gust advisories - the highest alert level - in core zones such as Wellington and Canterbury.
Locals have been encouraged to avoid going outside, stay off roads, and make arrangements for additional electricity and network failures.
Extensive Impact and Emergency Response
The electricity loss appears to be affecting households mostly in the southern region, though agencies say that power was being restored progressively.
Domestic outlets have reported that in some places structures have suffered roof damage, and power lines and trees have been toppled by the winds.
In Wellington, a man was fatally injured after being struck by a falling limb at a popular trail walking spot on Tuesday.
Additionally in the city, a woman was swept into approaching vehicles on a street by a strong gust of wind, in a moment that was captured in a popular vehicle recording.
Air travel to and from the metropolis have been suspended due to the winds, while some roads and libraries are not operating.
At the same time Canterbury officials have issued a crisis declaration, to assist recovery activities.
Labor Protests Amid Severe Conditions
The powerful gales on Thursday occur while many 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.
However the severe conditions has compelled them to change some of their plans, with some outdoor rallies shifted to interior venues or called off.
Similar gusts are affecting Australia, causing a high-temperature event to the country's outback.
Officials have issued burning restrictions for concern about forest fires.
