Intense gales hitting speeds of as high as 155km/h (96mph) have resulted in nearly 90,000 homes experiencing outages and compelled authorities to halt more than 100 aircraft departures, based on domestic outlets.
These gusts are influencing the entire southern region and southern sections of the North Island, per the country's meteorological service.
The nation's agencies have released rare severe gust advisories - the top caution category - in key areas including Canterbury and Wellington.
People have been encouraged to remain inside, stay off roads, and get ready for more power and communication outages.
Extensive Destruction and Crisis Measures
The power cut seems to be impacting residences mostly in the southern region, while authorities say that power was being restored progressively.
Domestic outlets have reported that in some places homes have lost their roofs, whereas power lines and trees have been brought down by the gusts.
Across Wellington, a person was killed after being hit by a tree branch at a popular trail walking spot on earlier this week.
Also in the capital, a woman was pushed toward moving cars on a thoroughfare by a powerful blast, in a event that was captured in a viral dashcam video.
Air travel entering and leaving the urban area have been halted as a result of the gusts, whereas some roads and libraries are also closed.
Meanwhile Canterbury officials have issued a emergency situation, to support disaster response efforts.
Labor Protests During Harsh Weather
The powerful gales on this day coincide with many of educators, medical professionals and government employees are participating in what has been termed a "major walkout", requesting higher wages and enhanced employment terms.
Yet the extreme weather has forced them to modify some of their plans, with some outdoor rallies shifted to interior venues or abandoned.
Like conditions are affecting the nearby nation, causing a period of extreme heat to the country's outback.
Agencies have issued flame prohibitions for concern about wildfires.