Severe winds reaching velocities of up to 155km/h (96mph) have left nearly 90,000 households without power and forced authorities to call off more than 100 aircraft departures, as reported by domestic outlets.
The winds are affecting the whole South Island and southern parts of the northern region, as stated by the national weather agency.
The nation's agencies have announced rare severe gust advisories - the most severe warning - in key areas encompassing these major districts.
Locals have been urged to stay indoors, refrain from journeys, and prepare for further electricity and network failures.
Extensive Destruction and Crisis Response
The electricity loss seems to be impacting homes mostly in the South Island, although authorities state that power was being restored progressively.
Domestic outlets have reported that in various locations structures have suffered roof damage, while power lines and trees have been toppled by the winds.
In Wellington, a man was killed after being hit by a tree branch at a frequent walking route on Tuesday.
Also in the capital, a woman was pushed toward moving cars on a thoroughfare by a strong gust of wind, in a incident that was captured in a popular vehicle recording.
Aircraft services to and from the urban area have been suspended due to the weather, whereas some roads and libraries are also closed.
At the same time Canterbury officials have issued a crisis declaration, to support emergency management operations.
Work Stoppages During Harsh Weather
The wild winds on Thursday come as tens of thousands of educators, medical professionals and government employees are participating in what has been termed a "significant labor action", demanding higher wages and enhanced employment terms.
But the severe conditions has compelled them to alter various scheduled activities, with several external protests moved indoors or cancelled.
Like conditions are impacting the neighboring country, bringing a heatwave to the country's outback.
Officials have issued fire bans for fear of forest fires.
