Intense gusts hitting velocities of up to 155km/h (96mph) have caused approximately 90,000 homes without power and forced agencies to halt in excess of 100 flights, according to regional news sources.
The winds are impacting the whole South Island and lower areas of the North Island, per the country's meteorological service.
New Zealand authorities have released uncommon red wind warnings - the highest alert level - in central regions encompassing Canterbury and Wellington.
Locals have been urged to avoid going outside, refrain from journeys, and make arrangements for more electricity and network failures.
Widespread Impact and Emergency Measures
The electricity loss seems to be impacting households mostly in the southern region, although authorities report that power was being slowly brought back.
Local media have indicated that in various locations homes have lost their roofs, and trees and electricity poles have been toppled by the gales.
In Wellington, a person was killed after being impacted by a falling limb at a popular trail walking spot on Tuesday.
Also in the capital, a individual was swept into moving cars on a road by a intensive burst, in a moment that was captured in a viral dashcam video.
Air travel in and out of the metropolis have been cancelled due to the weather, and certain highways and community centers are not operating.
Simultaneously authorities in Canterbury have issued a state of emergency, to support disaster response efforts.
Work Stoppages Amid Extreme Conditions
The wild winds on Thursday come as many of school staff, physicians and civil servants take part in what has been called a "mega strike", demanding improved salaries and workplace environments.
However the extreme weather has compelled them to modify certain arrangements, with some outdoor rallies shifted to interior venues or abandoned.
Like conditions are affecting the neighboring country, causing a high-temperature event to the remote areas.
Officials have announced burning restrictions for concern about bushfires.