Intense gusts reaching speeds of up to 155km/h (96mph) have left approximately 90,000 homes without power and compelled officials to halt in excess of 100 flights, according to local media.
The winds are influencing the whole South Island and lower areas of the northern region, according to the country's meteorological service.
The nation's agencies have released infrequent high-level wind alerts - the highest alert level - in core zones encompassing Wellington and Canterbury.
People have been encouraged to remain inside, stay off roads, and prepare for additional power and communication outages.
Widespread Damage and Emergency Response
The power cut seems to be impacting residences mainly in the southern region, while officials report that the electricity supply was being gradually reinstated.
Local media have indicated that in some places roofs have been ripped off houses, and power lines and trees have been knocked down by the gales.
Within the capital, a person was fatally injured after being impacted by a falling limb at a popular trail walking spot on earlier this week.
Meanwhile in Wellington, a individual was blown onto approaching vehicles on a thoroughfare by a intensive burst, in a event that was filmed in a viral dashcam video.
Air travel in and out of the urban area have been cancelled due to the winds, and various routes and public facilities are also closed.
Simultaneously local leaders have declared a state of emergency, to facilitate disaster response efforts.
Strike Action Amid Severe Conditions
These intense gusts on this day occur while many of educators, medical professionals and government employees are engaged in what has been called a "significant labor action", demanding higher wages and enhanced employment terms.
But the extreme weather has forced them to modify some of their plans, with some outdoor rallies moved indoors or called off.
Comparable winds are also sweeping the neighboring country, bringing a heatwave to the country's outback.
Agencies have announced flame prohibitions for apprehension regarding forest fires.
