Powerful gales attaining velocities of as high as 155km/h (96mph) have resulted in around 90,000 households lacking electricity and forced officials to cancel more than 100 air travel services, as reported by regional news sources.
The winds are influencing the whole South Island and southern parts of the North Island, according to the country's meteorological service.
Officials in New Zealand have released rare high-level wind alerts - the top caution category - in central regions encompassing Wellington and Canterbury.
People have been encouraged to stay indoors, avoid travel, and prepare for further utility disruptions.
Widespread Destruction and Emergency Measures
The electricity loss appears to be affecting households predominantly in the South Island, though officials state that power was being gradually reinstated.
Domestic outlets have reported that in certain areas structures have suffered roof damage, whereas power lines and trees have been toppled by the winds.
Across Wellington, a individual was lost his life after being struck by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a female was blown onto oncoming traffic on a street by a intensive burst, in a event that was captured in a popular vehicle recording.
Aircraft services entering and leaving the urban area have been suspended because of the weather, while some roads and libraries are not operating.
At the same time local leaders have issued a state of emergency, to support recovery activities.
Strike Action Amid Extreme Conditions
These intense gusts on today coincide with many of educators, medical professionals and government employees are engaged in what has been termed a "mega strike", demanding improved salaries and workplace environments.
Yet the severe conditions has compelled them to alter various scheduled activities, with some outdoor rallies relocated inside or abandoned.
Similar gusts are impacting Australia, bringing a high-temperature event to the remote areas.
Officials have announced fire bans for concern about wildfires.
