Powerful winds hitting speeds of as high as 155km/h (96mph) have caused around 90,000 households experiencing outages and led agencies to halt more than 100 aircraft departures, as reported by domestic outlets.
These gusts are impacting the complete South Island and southern parts of the northern region, according to the country's meteorological service.
The nation's agencies have released rare high-level wind alerts - the most severe warning - in central regions such as Wellington and Canterbury.
Locals have been advised to remain inside, refrain from journeys, and make arrangements for further utility disruptions.
Extensive Destruction and Emergency Measures
The power cut appears to be affecting residences mainly in the South Island, though authorities report that power was being gradually reinstated.
Regional news have indicated that in various locations structures have suffered roof damage, whereas utility poles and vegetation have been knocked down by the winds.
Within the capital, a person was fatally injured after being hit by a tree branch at a frequent walking route on Tuesday.
Meanwhile in Wellington, a woman was blown onto moving cars on a thoroughfare by a strong gust of wind, in a incident that was filmed in a popular vehicle recording.
Air travel to and from the urban area have been halted because of the weather, whereas some roads and libraries are shut down.
At the same time Canterbury officials have issued a crisis declaration, to assist disaster response efforts.
Strike Action Alongside Severe Conditions
The powerful gales on Thursday coincide with 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 extreme weather has compelled them to modify various scheduled activities, with various open-air gatherings relocated inside or cancelled.
Comparable winds are impacting the neighboring country, causing a period of extreme heat to the nation's interior regions.
Authorities have announced fire bans for fear of wildfires.
