Intense winds reaching velocities of approximately 155km/h (96mph) have caused around 90,000 households lacking electricity and led authorities to halt in excess of 100 air travel services, as reported by local media.
The gales are affecting the complete southern region and lower areas of the North Island, per the national weather agency.
The nation's agencies have released uncommon severe gust advisories - the top caution category - in central regions such as Wellington and Canterbury.
People have been advised to remain inside, avoid travel, and prepare for more utility disruptions.
Broad Destruction and Crisis Measures
The electricity loss appears to be affecting homes mostly in the southern region, although agencies state that energy was being slowly brought back.
Domestic outlets have indicated that in certain areas structures have suffered roof damage, whereas utility poles and vegetation have been knocked down by the gales.
Within the capital, a man was lost his life after being struck by a falling limb at a popular trail walking spot on Tuesday.
Additionally in the city, a female was swept into moving cars on a street by a strong gust of wind, in a event that was captured in a viral dashcam video.
Aircraft services to and from the city have been suspended due to the weather, whereas some roads and libraries are not operating.
At the same time authorities in Canterbury have declared a emergency situation, to facilitate recovery activities.
Strike Action Amid Harsh Conditions
The powerful gales on Thursday coincide with tens of thousands of school staff, physicians and civil servants take part in what has been termed a "mega strike", demanding higher wages and enhanced employment terms.
Yet the severe conditions has forced them to change various scheduled activities, with various open-air gatherings moved indoors or abandoned.
Like conditions are affecting Australia, causing a heatwave to the nation's interior regions.
Agencies have announced fire bans for apprehension regarding wildfires.
