Severe gales hitting speeds of up to 155km/h (96mph) have left around 90,000 households without power and compelled agencies to halt over 100 flights, according to regional news sources.
The winds are impacting the entire South Island and lower areas of the North Island, as stated by the national weather agency.
The nation's agencies have announced rare severe gust advisories - the most severe warning - in central regions including Canterbury and Wellington.
Residents have been encouraged to avoid going outside, stay off roads, and get ready for more utility disruptions.
Extensive Destruction and Emergency Response
The power cut is primarily influencing homes predominantly in the South Island, although officials report that the electricity supply was being gradually reinstated.
Domestic outlets have stated that in various locations homes have lost their roofs, while utility poles and vegetation have been brought down by the winds.
Across Wellington, a individual was fatally injured after being impacted by a falling limb at a well-known hiking path on earlier this week.
Meanwhile in Wellington, a individual was pushed toward oncoming traffic on a road by a strong gust of wind, in a event that was captured in a popular vehicle recording.
Air travel entering and leaving the urban area have been suspended because of the gusts, whereas some roads and libraries are not operating.
Meanwhile authorities in Canterbury have declared a crisis declaration, to facilitate disaster response efforts.
Work Stoppages During Harsh Weather
The wild winds on this day coincide with numerous of school staff, physicians and civil servants take part in what has been called a "significant labor action", requesting higher wages and enhanced employment terms.
But the extreme weather has pressured them to alter certain arrangements, with several external protests moved indoors or cancelled.
Like conditions are also sweeping the nearby nation, bringing a period of extreme heat to the remote areas.
Agencies have issued burning restrictions for fear of wildfires.