Severe gales attaining speeds of up to 155km/h (96mph) have resulted in approximately 90,000 homes without power and forced agencies to cancel in excess of 100 air travel services, according to domestic outlets.
The gales are affecting the complete southern region and southern sections of the northern region, according to the weather forecasting body.
The nation's agencies have announced rare severe gust advisories - the top caution category - in core zones encompassing Wellington and Canterbury.
Locals have been encouraged to remain inside, avoid travel, and make arrangements for additional utility disruptions.
Extensive Impact and Crisis Measures
The electricity loss seems to be impacting households predominantly in the South Island, while officials report that energy was being restored progressively.
Regional news have stated that in some places homes have lost their roofs, and power lines and trees have been toppled by the gusts.
In Wellington, a man was killed after being struck by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a individual was pushed toward approaching vehicles on a street by a powerful blast, in a event that was filmed in a widely shared car camera footage.
Flights entering and leaving the metropolis have been cancelled due to the gusts, whereas various routes and public facilities are not operating.
Simultaneously local leaders have issued a state of emergency, to assist emergency management operations.
Strike Action Amid Extreme Weather
The powerful gales on today come as tens of thousands of educators, medical professionals and government employees are participating in what has been called a "significant labor action", demanding higher wages and enhanced employment terms.
Yet the intense climate has compelled them to alter some of their plans, with some outdoor rallies shifted to interior venues or abandoned.
Comparable winds are impacting Australia, causing a heatwave to the remote areas.
Authorities have issued fire bans for apprehension regarding wildfires.