Severe gusts attaining velocities of approximately 155km/h (96mph) have resulted in nearly 90,000 properties without power and compelled agencies to call off more than 100 aircraft departures, based on local media.
The winds are affecting the whole South Island and lower areas of the northern region, as stated by the national weather agency.
The nation's agencies have released rare high-level wind alerts - the highest alert level - in central regions encompassing these major districts.
Locals have been encouraged to remain inside, refrain from journeys, and prepare for additional power and communication outages.
Broad Damage and Emergency Measures
This outage appears to be affecting homes mostly in the southern region, while officials report that the electricity supply was being slowly brought back.
Domestic outlets have stated that in various locations structures have suffered roof damage, whereas utility poles and vegetation have been brought down by the gusts.
Across Wellington, a man was killed after being hit by a tree branch at a well-known hiking path on Tuesday.
Also in the capital, a female was swept into approaching vehicles on a road by a powerful blast, in a incident that was recorded in a viral dashcam video.
Flights entering and leaving the city have been halted because of the gusts, and various routes and public facilities are shut down.
At the same time Canterbury officials have announced a crisis declaration, to support disaster response efforts.
Work Stoppages Alongside Harsh Conditions
The wild winds on this day coincide with tens of thousands of teachers, doctors and other public workers are engaged in what has been called a "significant labor action", demanding improved salaries and workplace environments.
However the severe conditions has pressured them to alter some of their plans, with various open-air gatherings relocated inside or called off.
Similar gusts are impacting the nearby nation, ushering in a period of extreme heat to the nation's interior regions.
Agencies have announced flame prohibitions for concern about forest fires.
