Powerful gales attaining velocities of as high as 155km/h (96mph) have resulted in approximately 90,000 properties without power and led agencies to cancel more than 100 flights, as reported by domestic outlets.
The winds are affecting the whole South Island and southern sections of the North Island, per the national weather agency.
New Zealand authorities have announced uncommon red wind warnings - the top caution category - in core zones including Wellington and Canterbury.
People have been urged to stay indoors, stay off roads, and get ready for additional utility disruptions.
Widespread Impact and Emergency Measures
The power cut appears to be affecting homes mostly in the southern region, while agencies report that the electricity supply was being slowly brought back.
Local media have reported that in some places homes have lost their roofs, while power lines and trees have been toppled by the gales.
Within the capital, a man was killed after being impacted by a tree branch at a popular trail walking spot on Tuesday.
Additionally in the city, a woman was blown onto oncoming traffic on a road by a powerful blast, in a incident that was captured in a viral dashcam video.
Flights in and out of the urban area have been cancelled because of the gusts, while some roads and libraries are also closed.
Simultaneously Canterbury officials have declared a state of emergency, to support recovery activities.
Strike Action Alongside Harsh Weather
The powerful gales on today occur while tens of thousands of teachers, doctors and other public workers take part in what has been described as a "mega strike", demanding better pay and working conditions.
Yet the extreme weather has forced them to change certain arrangements, with several external protests moved indoors or cancelled.
Comparable winds are also sweeping the neighboring country, bringing a heatwave to the remote areas.
Agencies have declared flame prohibitions for fear of forest fires.
