Severe winds hitting speeds of as high as 155km/h (96mph) have resulted in around 90,000 properties experiencing outages and forced authorities to halt more than 100 flights, according to regional news sources.
These gusts are influencing the whole South Island and southern sections of the North Island, per the weather forecasting body.
The nation's agencies have announced rare red wind warnings - the most severe warning - in key areas encompassing Canterbury and Wellington.
Residents have been encouraged to stay indoors, refrain from journeys, and make arrangements for more power and communication outages.
Broad Destruction and Crisis Response
The power cut appears to be affecting homes predominantly in the southern region, although authorities state that energy was being gradually reinstated.
Local media have stated that in various locations roofs have been ripped off houses, whereas power lines and trees have been knocked down by the gales.
In Wellington, a person was fatally injured after being impacted by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a female was pushed toward approaching vehicles on a street by a intensive burst, in a incident that was filmed in a viral dashcam video.
Aircraft services to and from the urban area have been suspended as a result of the gusts, while some roads and libraries are not operating.
At the same time authorities in Canterbury have announced a state of emergency, to facilitate recovery activities.
Labor Protests Alongside Harsh Conditions
These intense gusts on this day come as many of school staff, physicians and civil servants are engaged in what has been called a "significant labor action", calling for higher wages and enhanced employment terms.
However the intense climate has forced them to modify certain arrangements, with some outdoor rallies relocated inside or abandoned.
Comparable winds are impacting Australia, causing a heatwave to the country's outback.
Agencies have issued flame prohibitions for apprehension regarding forest fires.