Intense winds reaching velocities of approximately 155km/h (96mph) have resulted in approximately 90,000 homes without power and forced officials to cancel over 100 flights, based on local media.
The gales are influencing the complete South Island and southern parts of the northern region, per the national weather agency.
The nation's agencies have issued infrequent high-level wind alerts - the highest alert level - in key areas including Wellington and Canterbury.
Residents have been advised to stay indoors, avoid travel, and get ready for more electricity and network failures.
Broad Impact and Emergency Measures
The power cut appears to be affecting residences mainly in the southern region, although agencies state that energy was being gradually reinstated.
Local media have reported that in various locations structures have suffered roof damage, while trees and electricity poles have been brought down by the gusts.
Across Wellington, a man was killed after being impacted by a falling limb at a frequent walking route on Tuesday.
Meanwhile in Wellington, a woman was blown onto oncoming traffic on a thoroughfare by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Air travel to and from the city have been suspended due to the weather, while certain highways and community centers are not operating.
Meanwhile authorities in Canterbury have declared a emergency situation, to support disaster response efforts.
Labor Protests Alongside Extreme Conditions
The wild winds on Thursday come as tens of thousands of educators, medical professionals and government employees take part in what has been described as a "mega strike", demanding improved salaries and workplace environments.
Yet the extreme weather has compelled them to alter certain arrangements, with various open-air gatherings moved indoors or cancelled.
Similar gusts are affecting the neighboring country, causing a high-temperature event to the nation's interior regions.
Agencies have announced fire bans for apprehension regarding bushfires.
