Severe gusts attaining velocities of up to 155km/h (96mph) have caused approximately 90,000 households lacking electricity and forced authorities to cancel more than 100 air travel services, based on local media.
The winds are influencing the complete South Island and lower areas of the northern region, per the weather forecasting body.
Officials in New Zealand have released uncommon red wind warnings - the highest alert level - in core zones encompassing Wellington and Canterbury.
Residents have been advised to remain inside, avoid travel, and prepare for more utility disruptions.
Extensive Destruction and Emergency Measures
The electricity loss seems to be impacting homes mainly in the South Island, while agencies state that the electricity supply was being slowly brought back.
Regional news have reported that in various locations structures have suffered roof damage, and utility poles and vegetation have been knocked down by the winds.
Across Wellington, a person was killed after being struck by a tree branch at a popular trail walking spot on earlier this week.
Also in the capital, a female was swept into oncoming traffic on a thoroughfare by a powerful blast, in a moment that was recorded in a popular vehicle recording.
Aircraft services to and from the metropolis have been halted because of the gusts, while various routes and public facilities are also closed.
Meanwhile authorities in Canterbury have announced a emergency situation, to support emergency management operations.
Labor Protests During Harsh Conditions
The powerful gales on today come as many of teachers, doctors and other public workers are participating in what has been called a "significant labor action", demanding improved salaries and workplace environments.
However the intense climate has forced them to alter certain arrangements, with several external protests moved indoors or cancelled.
Similar gusts are affecting Australia, causing a heatwave to the remote areas.
Officials have issued burning restrictions for fear of wildfires.
