Powerful gales hitting speeds of approximately 155km/h (96mph) have caused nearly 90,000 homes without power and compelled officials to call off more than 100 flights, as reported by local media.
The winds are influencing the whole southern region and lower areas of the northern region, according to the weather forecasting body.
The nation's agencies have issued infrequent red wind warnings - the highest alert level - in core zones such as Wellington and Canterbury.
People have been encouraged to remain inside, refrain from journeys, and prepare for more power and communication outages.
Broad Damage and Emergency Measures
The power cut appears to be affecting residences mostly in the South Island, though agencies state that energy was being slowly brought back.
Local media have stated that in various locations homes have lost their roofs, and utility poles and vegetation have been brought down by the gales.
In Wellington, a person was lost his life after being hit by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a woman was blown onto approaching vehicles on a road by a powerful blast, in a incident that was filmed in a popular vehicle recording.
Air travel entering and leaving the urban area have been halted because of the weather, whereas various routes and public facilities are shut down.
At the same time authorities in Canterbury have declared a emergency situation, to assist recovery activities.
Work Stoppages Amid Severe Conditions
These intense gusts on Thursday come as numerous of educators, medical professionals and government employees are participating in what has been described as a "major walkout", demanding better pay and working conditions.
But the intense climate has compelled them to modify various scheduled activities, with some outdoor rallies moved indoors or called off.
Comparable winds are impacting Australia, bringing a heatwave to the nation's interior regions.
Agencies have issued flame prohibitions for apprehension regarding wildfires.