Powerful gales hitting velocities of approximately 155km/h (96mph) have resulted in nearly 90,000 properties without power and led authorities to halt in excess of 100 flights, as reported by local media.
The gales are affecting the complete South Island and southern parts of the North Island, according to the national weather agency.
The nation's agencies have issued uncommon red wind warnings - the highest alert level - in key areas such as these major districts.
Locals have been advised to remain inside, avoid travel, and make arrangements for further electricity and network failures.
Extensive Damage and Crisis Measures
The electricity loss appears to be affecting households mainly in the South Island, while officials state that energy was being gradually reinstated.
Local media have stated that in certain areas roofs have been ripped off houses, whereas power lines and trees have been toppled by the gales.
Across Wellington, a person was lost his life after being struck by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a woman was pushed toward approaching vehicles on a thoroughfare by a intensive burst, in a event that was captured in a widely shared car camera footage.
Aircraft services entering and leaving the urban area have been cancelled due to the winds, whereas some roads and libraries are not operating.
At the same time local leaders have issued a crisis declaration, to facilitate emergency management operations.
Strike Action Amid Harsh Conditions
The powerful gales on Thursday come as tens of thousands of teachers, doctors and other public workers are engaged in what has been termed a "mega strike", demanding higher wages and enhanced employment terms.
But the extreme weather has forced them to change various scheduled activities, with various open-air gatherings shifted to interior venues or cancelled.
Comparable winds are impacting the nearby nation, ushering in a heatwave to the country's outback.
Agencies have announced burning restrictions for fear of forest fires.
