Intense winds reaching speeds of up to 155km/h (96mph) have resulted in around 90,000 households without power and compelled officials to cancel over 100 air travel services, as reported by local media.
These gusts are influencing the whole southern region and lower areas of the northern region, according to the weather forecasting body.
New Zealand authorities have announced rare red wind warnings - the highest alert level - in core zones including these major districts.
Residents have been encouraged to stay indoors, stay off roads, and prepare for more utility disruptions.
Extensive Impact and Emergency Measures
The power cut seems to be impacting residences predominantly in the South Island, although authorities report that the electricity supply was being gradually reinstated.
Local media have stated that in various locations roofs have been ripped off houses, and utility poles and vegetation have been knocked down by the winds.
Across Wellington, a man was killed after being impacted by a tree branch at a frequent walking route on Tuesday.
Meanwhile in Wellington, a woman was pushed toward approaching vehicles on a thoroughfare by a powerful blast, in a incident that was recorded in a widely shared car camera footage.
Flights to and from the city have been cancelled due to the winds, while some roads and libraries are not operating.
Simultaneously Canterbury officials have announced a emergency situation, to support emergency management operations.
Work Stoppages Amid Harsh Weather
The wild winds on today occur while many of teachers, doctors and other public workers are engaged in what has been termed a "major walkout", demanding better pay and working conditions.
However the severe conditions has forced them to modify some of their plans, with various open-air gatherings relocated inside or called off.
Like conditions are affecting the nearby nation, bringing a period of extreme heat to the country's outback.
Agencies have issued fire bans for apprehension regarding wildfires.
