Powerful gales reaching velocities of as high as 155km/h (96mph) have caused approximately 90,000 properties without power and led authorities to cancel more than 100 flights, according to regional news sources.
These gusts are impacting the entire South Island and southern sections of the northern region, as stated by the country's meteorological service.
Officials in New Zealand have issued rare high-level wind alerts - the top caution category - in key areas encompassing these major districts.
People have been advised to avoid going outside, refrain from journeys, and get ready for further electricity and network failures.
Extensive Destruction and Emergency Measures
The electricity loss seems to be impacting residences mostly in the southern region, while officials say that the electricity supply was being slowly brought back.
Local media have reported that in some places structures have suffered roof damage, and utility poles and vegetation have been brought down by the winds.
In Wellington, a individual was fatally injured after being hit by a tree branch at a frequent walking route on Tuesday.
Also in the capital, a woman was pushed toward approaching vehicles on a thoroughfare by a powerful blast, in a moment that was filmed in a widely shared car camera footage.
Flights in and out of the urban area have been cancelled as a result of the winds, while various routes and public facilities are also closed.
At the same time authorities in Canterbury have declared a crisis declaration, to assist recovery activities.
Labor Protests Alongside Severe Conditions
These intense gusts on this day come as tens of thousands of school staff, physicians and civil servants take part in what has been called a "significant labor action", calling for improved salaries and workplace environments.
Yet the extreme weather has pressured them to alter certain arrangements, with several external protests relocated inside or called off.
Like conditions are affecting the nearby nation, ushering in a heatwave to the country's outback.
Agencies have announced flame prohibitions for apprehension regarding bushfires.