Intense gales attaining velocities of as high as 155km/h (96mph) have caused around 90,000 households lacking electricity and led agencies to halt more than 100 flights, according to local media.
The gales are affecting the whole southern region and southern sections of the northern region, per the weather forecasting body.
The nation's agencies have issued rare red wind warnings - the most severe warning - in key areas including these major districts.
People have been urged to remain inside, stay off roads, and make arrangements for further utility disruptions.
Extensive Damage and Emergency Response
The electricity loss seems to be impacting residences predominantly in the southern region, while officials say that the electricity supply was being restored progressively.
Regional news have stated that in certain areas roofs have been ripped off houses, while trees and electricity poles have been knocked down by the gusts.
In Wellington, a individual was fatally injured after being hit by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a woman was pushed toward moving cars on a street by a strong gust of wind, in a event that was captured in a popular vehicle recording.
Air travel in and out of the city have been suspended as a result of the weather, and some roads and libraries are also closed.
Simultaneously authorities in Canterbury have declared a emergency situation, to facilitate recovery activities.
Work Stoppages During Extreme Weather
These intense gusts on Thursday come as many of school staff, physicians and civil servants are engaged in what has been termed a "mega strike", demanding improved salaries and workplace environments.
But the extreme weather has forced them to change some of their plans, with several external protests moved indoors or called off.
Similar gusts are also sweeping the nearby nation, ushering in a high-temperature event to the country's outback.
Authorities have declared burning restrictions for fear of wildfires.