Powerful gusts hitting speeds of approximately 155km/h (96mph) have resulted in around 90,000 homes without power and forced agencies to cancel more than 100 flights, as reported by domestic outlets.
The winds are impacting the entire southern region and southern sections of the northern region, per the national weather agency.
The nation's agencies have announced rare high-level wind alerts - the most severe warning - in key areas encompassing Wellington and Canterbury.
Residents have been advised to stay indoors, refrain from journeys, and make arrangements for more utility disruptions.
Broad Destruction and Emergency Response
The power cut is primarily influencing residences predominantly in the South Island, though officials report that energy was being restored progressively.
Local media have stated that in some places roofs have been ripped off houses, whereas utility poles and vegetation have been toppled by the gusts.
Across Wellington, a man was killed after being impacted by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a female was blown onto oncoming traffic on a street by a strong gust of wind, in a event that was recorded in a viral dashcam video.
Aircraft services in and out of the city have been halted as a result of the gusts, whereas certain highways and community centers are not operating.
Meanwhile local leaders have announced a emergency situation, to support disaster response efforts.
Work Stoppages Amid Harsh Conditions
The powerful gales on this day coincide with numerous of school staff, physicians and civil servants take part in what has been called a "significant labor action", demanding improved salaries and workplace environments.
However the intense climate has pressured them to change some of their plans, with several external protests shifted to interior venues or called off.
Like conditions are impacting the neighboring country, bringing a period of extreme heat to the remote areas.
Officials have announced burning restrictions for fear of wildfires.