Severe gales attaining speeds of approximately 155km/h (96mph) have caused around 90,000 households lacking electricity and led authorities to call off in excess of 100 air travel services, based on local media.
The gales are affecting the entire South Island and southern parts of the northern region, per the national weather agency.
Officials in New Zealand have released infrequent severe gust advisories - the most severe warning - in core zones such as Wellington and Canterbury.
People have been urged to stay indoors, refrain from journeys, and prepare for further utility disruptions.
Extensive Destruction and Emergency Response
The power cut appears to be affecting residences predominantly in the southern region, while authorities report that the electricity supply was being gradually reinstated.
Local media have reported that in various locations structures have suffered roof damage, and power lines and trees have been brought down by the winds.
Within the capital, a individual was lost his life after being impacted by a falling limb at a frequent walking route on earlier this week.
Also in the capital, a female was swept into oncoming traffic on a road 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 because of the gusts, and certain highways and community centers are shut down.
Simultaneously authorities in Canterbury have announced a crisis declaration, to facilitate disaster response efforts.
Strike Action During Harsh Conditions
These intense gusts on today coincide with tens of thousands of educators, medical professionals and government employees are participating in what has been described as a "mega strike", demanding improved salaries and workplace environments.
However the extreme weather has forced them to modify certain arrangements, with some outdoor rallies shifted to interior venues or abandoned.
Similar gusts are also sweeping the neighboring country, causing a period of extreme heat to the nation's interior regions.
Agencies have declared fire bans for apprehension regarding forest fires.
