Powerful gales reaching speeds of as high as 155km/h (96mph) have resulted in approximately 90,000 homes lacking electricity and compelled agencies to halt more than 100 flights, according to domestic outlets.
The winds are impacting the whole southern region and southern parts of the northern region, as stated by the weather forecasting body.
Officials in New Zealand have released rare severe gust advisories - the top caution category - in core zones encompassing Canterbury and Wellington.
People have been advised to stay indoors, avoid travel, and prepare for additional power and communication outages.
Widespread Impact and Crisis Measures
The power cut is primarily influencing residences predominantly in the South Island, although agencies say that the electricity supply was being restored progressively.
Regional news have indicated that in various locations structures have suffered roof damage, while trees and electricity poles have been knocked down by the gusts.
Across Wellington, a person was killed after being struck by a tree branch at a well-known hiking path on Tuesday.
Additionally in the city, a female was blown onto oncoming traffic on a road by a strong gust of wind, in a incident that was captured in a viral dashcam video.
Aircraft services in and out of the metropolis have been cancelled because of the winds, whereas various routes and public facilities are not operating.
Simultaneously local leaders have declared a state of emergency, to support emergency management operations.
Work Stoppages During Severe Conditions
These intense gusts on Thursday coincide with tens of thousands of teachers, doctors and other public workers are participating in what has been described as a "mega strike", demanding higher wages and enhanced employment terms.
However the severe conditions has forced them to change some of their plans, with various open-air gatherings shifted to interior venues or called off.
Comparable winds are affecting the neighboring country, bringing a heatwave to the nation's interior regions.
Agencies have issued flame prohibitions for fear of forest fires.
