Powerful gusts reaching velocities of approximately 155km/h (96mph) have caused nearly 90,000 households without power and forced officials to halt more than 100 aircraft departures, according to local media.
The winds are influencing the complete South Island and lower areas of the northern region, according to the weather forecasting body.
New Zealand authorities have announced infrequent severe gust advisories - the most severe warning - in central regions encompassing Canterbury and Wellington.
Locals have been encouraged to avoid going outside, avoid travel, and prepare for further electricity and network failures.
Widespread Destruction and Emergency Measures
The electricity loss is primarily influencing homes mostly in the southern region, though agencies say that energy was being restored progressively.
Regional news have reported that in certain areas roofs have been ripped off houses, while trees and electricity poles have been knocked down by the gusts.
In Wellington, a person was killed after being struck by a falling limb at a well-known hiking path on Tuesday.
Also in the capital, a woman was swept into oncoming traffic on a thoroughfare by a strong gust of wind, in a event that was recorded in a viral dashcam video.
Flights to and from the city have been halted because of the winds, while some roads and libraries are shut down.
Meanwhile Canterbury officials have announced a crisis declaration, to facilitate recovery activities.
Work Stoppages Alongside Extreme Conditions
These intense gusts on today occur while tens of thousands of educators, medical professionals and government employees are engaged in what has been termed a "mega strike", requesting improved salaries and workplace environments.
However the extreme weather has forced them to change certain arrangements, with several external protests moved indoors or abandoned.
Comparable winds are also sweeping Australia, ushering in a high-temperature event to the remote areas.
Agencies have declared flame prohibitions for fear of bushfires.
