Intense gusts reaching velocities of as high as 155km/h (96mph) have left approximately 90,000 properties lacking electricity and led authorities to call off in excess of 100 flights, based on local media.
The gales are affecting the whole South Island and southern parts of the North Island, per the country's meteorological service.
New Zealand authorities have released rare severe gust advisories - the highest alert level - in key areas such as these major districts.
Locals have been advised to stay indoors, refrain from journeys, and make arrangements for further utility disruptions.
Widespread Damage and Crisis Response
This outage seems to be impacting residences predominantly in the South Island, although officials state that power was being gradually reinstated.
Domestic outlets have stated that in some places roofs have been ripped off houses, whereas power lines and trees have been toppled by the gales.
Across Wellington, a person was killed after being hit by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a individual was swept into oncoming traffic on a thoroughfare by a powerful blast, in a moment that was recorded in a viral dashcam video.
Aircraft services entering and leaving the metropolis have been cancelled because of the winds, whereas certain highways and community centers are not operating.
Simultaneously local leaders have declared a emergency situation, to support recovery activities.
Strike Action Amid Severe Conditions
The wild winds on this day occur while numerous of educators, medical professionals and government employees are engaged in what has been termed a "significant labor action", calling for improved salaries and workplace environments.
Yet the extreme weather has forced them to alter various scheduled activities, with several external protests relocated inside or cancelled.
Like conditions are also sweeping Australia, ushering in a heatwave to the country's outback.
Authorities have announced burning restrictions for apprehension regarding wildfires.