Severe gusts reaching speeds of as high as 155km/h (96mph) have left around 90,000 households lacking electricity and compelled authorities to halt in excess of 100 flights, according to domestic outlets.
The gales are impacting the entire southern region and lower areas of the northern region, as stated by the country's meteorological service.
The nation's agencies have issued rare high-level wind alerts - the highest alert level - in key areas such as Canterbury and Wellington.
People have been urged to avoid going outside, stay off roads, and prepare for additional power and communication outages.
Widespread Destruction and Crisis Response
The power cut is primarily influencing households predominantly in the South Island, though authorities say that power was being restored progressively.
Local media have indicated that in certain areas structures have suffered roof damage, while trees and electricity poles have been toppled by the gales.
In Wellington, a individual was fatally injured after being hit by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a individual was pushed toward moving cars on a road by a intensive burst, in a moment that was recorded in a widely shared car camera footage.
Aircraft services in and out of the urban area have been suspended as a result of the winds, and various routes and public facilities are also closed.
Simultaneously local leaders have announced a state of emergency, to support emergency management operations.
Work Stoppages During Extreme Conditions
These intense gusts on this day occur while numerous of teachers, doctors and other public workers are engaged in what has been termed a "mega strike", requesting better pay and working conditions.
But the intense climate has compelled them to alter some of their plans, with some outdoor rallies moved indoors or cancelled.
Similar gusts are affecting the neighboring country, bringing a high-temperature event to the country's outback.
Authorities have issued flame prohibitions for fear of wildfires.