Severe winds attaining velocities of up to 155km/h (96mph) have left around 90,000 properties experiencing outages and forced agencies to halt in excess of 100 air travel services, based on domestic outlets.
The gales are impacting the complete South Island and lower areas of the North Island, according to the national weather agency.
New Zealand authorities have announced uncommon high-level wind alerts - the most severe warning - in key areas such as Wellington and Canterbury.
Locals have been advised to stay indoors, refrain from journeys, and make arrangements for further electricity and network failures.
Extensive Impact and Crisis Response
This outage is primarily influencing households predominantly in the South Island, though authorities say that energy was being restored progressively.
Domestic outlets have stated that in certain areas roofs have been ripped off houses, while trees and electricity poles have been toppled by the winds.
Across Wellington, a person was fatally injured after being struck by a falling limb at a popular trail walking spot on earlier this week.
Additionally in the city, a female was swept into oncoming traffic on a road by a intensive burst, in a event that was recorded in a viral dashcam video.
Flights in and out of the city have been halted as a result of the weather, whereas certain highways and community centers are shut down.
Simultaneously Canterbury officials have announced a state of emergency, to assist disaster response efforts.
Labor Protests Alongside Harsh Conditions
These intense gusts on this day coincide with many of educators, medical professionals and government employees are participating in what has been termed a "mega strike", demanding higher wages and enhanced employment terms.
Yet the extreme weather has pressured them to change some of their plans, with several external protests relocated inside or called off.
Comparable winds are impacting the nearby nation, causing a period of extreme heat to the nation's interior regions.
Authorities have declared flame prohibitions for fear of wildfires.