Intense winds attaining velocities of up to 155km/h (96mph) have left approximately 90,000 households without power and forced agencies to halt in excess of 100 aircraft departures, based on domestic outlets.
The gales are affecting the entire South Island and southern parts of the northern region, per the national weather agency.
New Zealand authorities have issued uncommon red wind warnings - the top caution category - in key areas including these major districts.
Locals have been advised to avoid going outside, refrain from journeys, and prepare for additional power and communication outages.
Broad Destruction and Emergency Measures
The power cut is primarily influencing households mainly in the South Island, although agencies report that power was being slowly brought back.
Domestic outlets have stated that in some places roofs have been ripped off houses, and trees and electricity poles have been brought down by the gusts.
Within the capital, a man was killed after being hit by a falling limb at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was blown onto moving cars on a thoroughfare by a powerful blast, in a incident that was recorded in a viral dashcam video.
Flights in and out of the metropolis have been cancelled because of the weather, while certain highways and community centers are shut down.
At the same time authorities in Canterbury have issued a state of emergency, to facilitate disaster response efforts.
Strike Action Amid Harsh Weather
The wild winds on Thursday coincide with many of educators, medical professionals and government employees are engaged in what has been described as a "major walkout", demanding improved salaries and workplace environments.
But the extreme weather has pressured them to change various scheduled activities, with some outdoor rallies relocated inside or abandoned.
Comparable winds are impacting the neighboring country, ushering in a heatwave to the nation's interior regions.
Authorities have issued fire bans for fear of forest fires.
