Severe winds reaching speeds of approximately 155km/h (96mph) have left around 90,000 households without power and led officials to cancel more than 100 air travel services, according to local media.
These gusts are impacting the complete South Island and southern sections of the North Island, as stated by the national weather agency.
Officials in New Zealand have announced infrequent high-level wind alerts - the highest alert level - in key areas such as Wellington and Canterbury.
Locals have been encouraged to avoid going outside, stay off roads, and prepare for additional electricity and network failures.
Widespread Destruction and Crisis Measures
The power cut is primarily influencing households predominantly in the South Island, though officials state that the electricity supply was being gradually reinstated.
Domestic outlets have stated that in certain areas homes have lost their roofs, and trees and electricity poles have been knocked down by the winds.
Across Wellington, a man was killed after being hit by a tree branch at a popular trail walking spot on Tuesday.
Additionally in the city, a individual was blown onto oncoming traffic on a street by a powerful blast, in a moment that was recorded in a popular vehicle recording.
Air travel to and from the urban area have been suspended due to the weather, whereas various routes and public facilities are shut down.
At the same time Canterbury officials have declared a emergency situation, to support recovery activities.
Work Stoppages Alongside Extreme Conditions
The powerful gales on this day come as many of educators, medical professionals and government employees are participating in what has been termed a "significant labor action", calling for higher wages and enhanced employment terms.
But the intense climate has compelled them to alter some of their plans, with some outdoor rallies relocated inside or cancelled.
Similar gusts are also sweeping the nearby nation, ushering in a heatwave to the remote areas.
Authorities have issued fire bans for apprehension regarding bushfires.
