Powerful gusts reaching speeds of as high as 155km/h (96mph) have resulted in around 90,000 households lacking electricity and led agencies to cancel in excess of 100 air travel services, as reported by domestic outlets.
These gusts are influencing the whole southern region and southern sections of the North Island, per the country's meteorological service.
The nation's agencies have released rare high-level wind alerts - the most severe warning - in central regions including Wellington and Canterbury.
Residents have been advised to remain inside, stay off roads, and prepare for further power and communication outages.
Widespread Damage and Emergency Response
The power cut seems to be impacting residences predominantly in the South Island, though officials state that energy was being gradually reinstated.
Domestic outlets have reported that in various locations structures have suffered roof damage, while utility poles and vegetation have been toppled by the gales.
Across Wellington, a person was fatally injured after being hit by a wooden fragment at a popular trail walking spot on earlier this week.
Additionally in the city, a woman was pushed toward oncoming traffic on a thoroughfare by a strong gust of wind, in a moment that was captured in a viral dashcam video.
Aircraft services in and out of the city have been halted because of the weather, whereas various routes and public facilities are shut down.
At the same time authorities in Canterbury have declared a state of emergency, to assist emergency management operations.
Strike Action Amid Extreme Weather
These intense gusts on today occur while numerous of educators, medical professionals and government employees take part in what has been termed a "significant labor action", calling for better pay and working conditions.
Yet the severe conditions has forced them to modify some of their plans, with several external protests moved indoors or cancelled.
Like conditions are impacting the nearby nation, ushering in a heatwave to the remote areas.
Officials have declared burning restrictions for concern about wildfires.