Powerful winds reaching speeds of approximately 155km/h (96mph) have resulted in around 90,000 properties without power and led officials to cancel over 100 flights, based on regional news sources.
These gusts are influencing the complete southern region and southern parts of the North Island, according to the weather forecasting body.
The nation's agencies have announced rare severe gust advisories - the highest alert level - in key areas such as Canterbury and Wellington.
People have been encouraged to stay indoors, stay off roads, and get ready for further power and communication outages.
Extensive Impact and Crisis Measures
The power cut seems to be impacting homes predominantly in the South Island, although authorities state that power was being slowly brought back.
Regional news have indicated that in various locations structures have suffered roof damage, whereas trees and electricity poles have been knocked down by the winds.
Across Wellington, a man was fatally injured after being hit by a falling limb at a frequent walking route on earlier this week.
Additionally in the city, a individual was swept into oncoming traffic on a thoroughfare by a intensive burst, in a moment that was recorded in a viral dashcam video.
Air travel entering and leaving the metropolis have been suspended because of the weather, while certain highways and community centers are also closed.
Simultaneously authorities in Canterbury have issued a state of emergency, to assist emergency management operations.
Strike Action During Severe Weather
The wild winds on Thursday occur while numerous of school staff, physicians and civil servants are participating in what has been called a "mega strike", demanding improved salaries and workplace environments.
But the severe conditions has compelled them to change certain arrangements, with several external protests relocated inside or abandoned.
Like conditions are also sweeping Australia, causing a period of extreme heat to the remote areas.
Officials have announced flame prohibitions for fear of bushfires.
