Intense gales attaining speeds of approximately 155km/h (96mph) have resulted in nearly 90,000 homes without power and compelled authorities to call off more than 100 flights, based on domestic outlets.
These gusts are influencing the complete South Island and lower areas of the North Island, per the weather forecasting body.
The nation's agencies have issued infrequent severe gust advisories - the highest alert level - in key areas such as Canterbury and Wellington.
People have been encouraged to avoid going outside, avoid travel, and prepare for further utility disruptions.
Extensive Destruction and Crisis Response
The electricity loss seems to be impacting households predominantly in the southern region, while agencies report that the electricity supply was being slowly brought back.
Domestic outlets have stated that in certain areas structures have suffered roof damage, while power lines and trees have been toppled by the gales.
Across Wellington, a person was fatally injured after being impacted by a tree branch at a frequent walking route on Tuesday.
Additionally in the city, a woman was swept into approaching vehicles on a road by a strong gust of wind, in a moment that was filmed in a widely shared car camera footage.
Air travel to and from the urban area have been halted because of the gusts, and some roads and libraries are shut down.
Meanwhile Canterbury officials have issued a state of emergency, to facilitate emergency management operations.
Labor Protests Alongside Severe Conditions
The wild winds on this day coincide with tens of thousands of educators, medical professionals and government employees take part in what has been termed a "mega strike", demanding better pay and working conditions.
But the intense climate has compelled them to alter various scheduled activities, with several external protests shifted to interior venues or cancelled.
Comparable winds are affecting Australia, ushering in a heatwave to the nation's interior regions.
Authorities have announced flame prohibitions for fear of forest fires.