Intense gales hitting speeds of up to 155km/h (96mph) have resulted in approximately 90,000 households without power and forced authorities to call off over 100 air travel services, based on local media.
The winds are impacting the complete South Island and southern parts of the northern region, per the weather forecasting body.
The nation's agencies have issued rare severe gust advisories - the highest alert level - in core zones such as Wellington and Canterbury.
People have been advised to remain inside, stay off roads, and get ready for additional utility disruptions.
Extensive Impact and Emergency Measures
The electricity loss appears to be affecting residences predominantly in the southern region, though agencies report that power was being gradually reinstated.
Domestic outlets have stated that in certain areas roofs have been ripped off houses, while trees and electricity poles have been knocked down by the gusts.
Across Wellington, a person was killed after being struck by a wooden fragment at a popular trail walking spot on earlier this week.
Additionally in the city, a woman was swept into moving cars on a road by a strong gust of wind, in a event that was captured in a popular vehicle recording.
Flights entering and leaving the metropolis have been cancelled due to the winds, whereas certain highways and community centers are shut down.
Meanwhile local leaders have announced a emergency situation, to facilitate recovery activities.
Work Stoppages During Harsh Weather
The wild winds on Thursday occur while numerous of school staff, physicians and civil servants are engaged in what has been called a "mega strike", requesting better pay and working conditions.
But the extreme weather has pressured them to modify certain arrangements, with several external protests relocated inside or cancelled.
Like conditions are impacting the neighboring country, causing a heatwave to the remote areas.
Officials have announced burning restrictions for fear of wildfires.