Severe winds hitting velocities of approximately 155km/h (96mph) have resulted in nearly 90,000 homes experiencing outages and forced agencies to call off more than 100 aircraft departures, based on domestic outlets.
These gusts are influencing the complete South Island and lower areas of the northern region, per the weather forecasting body.
The nation's agencies have released uncommon red wind warnings - the top caution category - in key areas encompassing Canterbury and Wellington.
Residents have been encouraged to stay indoors, refrain from journeys, and prepare for further utility disruptions.
Broad Impact and Emergency Response
This outage is primarily influencing households mainly in the South Island, although officials state that energy was being slowly brought back.
Regional news have indicated that in some places homes have lost their roofs, and power lines and trees have been brought down by the gales.
Across Wellington, a person was fatally injured after being hit by a falling limb at a well-known hiking path on earlier this week.
Meanwhile in Wellington, a female was pushed toward oncoming traffic on a road by a powerful blast, in a event that was filmed in a widely shared car camera footage.
Flights in and out of the metropolis have been halted because of the gusts, while various routes and public facilities are not operating.
At the same time Canterbury officials have issued a state of emergency, to assist emergency management operations.
Labor Protests Amid Extreme Weather
The powerful gales on this day coincide with numerous of teachers, doctors and other public workers take part in what has been called a "mega strike", calling for better pay and working conditions.
But the extreme weather has forced them to change some of their plans, with several external protests shifted to interior venues or abandoned.
Like conditions are affecting Australia, ushering in a heatwave to the nation's interior regions.
Agencies have declared fire bans for fear of forest fires.