Powerful winds reaching speeds of approximately 155km/h (96mph) have resulted in approximately 90,000 homes lacking electricity and led authorities to halt over 100 aircraft departures, as reported by regional news sources.
The winds are impacting the complete South Island and southern sections of the North Island, according to the national weather agency.
New Zealand authorities have announced rare red wind warnings - the top caution category - in key areas including Canterbury and Wellington.
Locals have been advised to avoid going outside, stay off roads, and get ready for further utility disruptions.
Extensive Impact and Emergency Measures
The electricity loss is primarily influencing homes mainly in the South Island, although agencies report that energy was being restored progressively.
Regional news have reported that in some places structures have suffered roof damage, while utility poles and vegetation have been knocked down by the gales.
In Wellington, a man was killed after being hit by a tree branch at a frequent walking route on Tuesday.
Meanwhile in Wellington, a woman was blown onto oncoming traffic on a road by a powerful blast, in a incident that was recorded in a viral dashcam video.
Aircraft services to and from the city have been suspended due to the winds, and certain highways and community centers are shut down.
Meanwhile local leaders have declared a state of emergency, to support disaster response efforts.
Labor Protests Amid Harsh Weather
These intense gusts on Thursday come as many of educators, medical professionals and government employees take part in what has been termed a "significant labor action", requesting improved salaries and workplace environments.
But the extreme weather has forced them to modify certain arrangements, with some outdoor rallies relocated inside or called off.
Comparable winds are also sweeping the neighboring country, bringing a high-temperature event to the country's outback.
Officials have announced flame prohibitions for concern about forest fires.