Intense gales attaining velocities of as high as 155km/h (96mph) have resulted in around 90,000 properties lacking electricity and compelled agencies to cancel more than 100 flights, according to regional news sources.
The gales are affecting the whole South Island and southern sections of the North Island, as stated by the weather forecasting body.
The nation's agencies have released infrequent severe gust advisories - the top caution category - in central regions such as Wellington and Canterbury.
Residents have been encouraged to remain inside, stay off roads, and prepare for further electricity and network failures.
Broad Damage and Emergency Measures
The power cut is primarily influencing homes predominantly in the South Island, while authorities say that the electricity supply was being slowly brought back.
Domestic outlets have stated that in some places homes have lost their roofs, and utility poles and vegetation have been brought down by the gales.
Within the capital, a man was fatally injured after being struck by a tree branch at a well-known hiking path on Tuesday.
Additionally in the city, a individual was blown onto oncoming traffic on a thoroughfare by a intensive burst, in a incident that was filmed in a popular vehicle recording.
Aircraft services in and out of the city have been cancelled because of the gusts, and various routes and public facilities are also closed.
At the same time authorities in Canterbury have announced a emergency situation, to assist recovery activities.
Strike Action Amid Severe Conditions
The powerful gales on this day come as many of teachers, doctors and other public workers take part in what has been called a "mega strike", demanding better pay and working conditions.
But the extreme weather has forced them to alter certain arrangements, with several external protests moved indoors or cancelled.
Similar gusts are affecting the nearby nation, causing a heatwave to the nation's interior regions.
Officials have declared fire bans for fear of wildfires.
