Intense winds reaching velocities of approximately 155km/h (96mph) have resulted in around 90,000 properties experiencing outages and forced officials to call off in excess of 100 flights, as reported by local media.
The gales are impacting the whole South Island and southern sections of the North Island, according to the weather forecasting body.
Officials in New Zealand have issued infrequent severe gust advisories - the highest alert level - in core zones encompassing Canterbury and Wellington.
People have been encouraged to avoid going outside, stay off roads, and prepare for further electricity and network failures.
Widespread Damage and Crisis Measures
The power cut appears to be affecting residences mostly in the South Island, while officials say that energy was being gradually reinstated.
Regional news have reported that in some places structures have suffered roof damage, whereas trees and electricity poles have been toppled by the gusts.
Within the capital, a person was lost his life after being struck by a falling limb at a frequent walking route on earlier this week.
Meanwhile in Wellington, a individual was pushed toward oncoming traffic on a road by a powerful blast, in a moment that was filmed in a popular vehicle recording.
Flights in and out of the city have been halted due to the gusts, whereas certain highways and community centers are shut down.
Meanwhile Canterbury officials have issued a crisis declaration, to assist disaster response efforts.
Work Stoppages Amid Extreme Conditions
The powerful gales on Thursday coincide with many of educators, medical professionals and government employees take part in what has been called a "significant labor action", calling for higher wages and enhanced employment terms.
However the extreme weather has compelled them to change some of their plans, with various open-air gatherings shifted to interior venues or called off.
Like conditions are affecting the nearby nation, bringing a heatwave to the nation's interior regions.
Authorities have issued flame prohibitions for concern about forest fires.
