Powerful winds reaching speeds of as high as 155km/h (96mph) have left approximately 90,000 properties without power and compelled agencies to halt in excess of 100 aircraft departures, based on domestic outlets.
The gales are affecting the complete South Island and southern parts of the North Island, per the weather forecasting body.
Officials in New Zealand have announced infrequent severe gust advisories - the highest alert level - in core zones such as these major districts.
People have been encouraged to remain inside, refrain from journeys, and prepare for more electricity and network failures.
Widespread Destruction and Emergency Response
The power cut is primarily influencing residences mostly in the South Island, while authorities state that power was being slowly brought back.
Regional news have indicated that in various locations structures have suffered roof damage, whereas utility poles and vegetation have been toppled by the winds.
Within the capital, a man was lost his life after being struck by a tree branch at a well-known hiking path on earlier this week.
Meanwhile in Wellington, a female was swept into oncoming traffic on a road by a powerful blast, in a moment that was recorded in a viral dashcam video.
Flights to and from the city have been cancelled due to the winds, while various routes and public facilities are also closed.
Simultaneously local leaders have issued a emergency situation, to support emergency management operations.
Strike Action During Severe Weather
These intense gusts on today coincide with numerous of teachers, doctors and other public workers are participating in what has been described as a "significant labor action", requesting better pay and working conditions.
But the intense climate has compelled them to change some of their plans, with several external protests shifted to interior venues or called off.
Like conditions are affecting Australia, bringing a heatwave to the nation's interior regions.
Authorities have issued burning restrictions for fear of wildfires.