Intense gales reaching speeds of approximately 155km/h (96mph) have caused around 90,000 households lacking electricity and compelled agencies to cancel more than 100 flights, according to domestic outlets.
The winds are affecting the complete South Island and lower areas of the North Island, according to the country's meteorological service.
The nation's agencies have announced uncommon red wind warnings - the highest alert level - in key areas including Canterbury and Wellington.
Residents have been encouraged to remain inside, refrain from journeys, and get ready for more power and communication outages.
Extensive Destruction and Crisis Measures
The electricity loss appears to be affecting residences mainly in the southern region, though officials report that power was being slowly brought back.
Regional news have indicated that in various locations roofs have been ripped off houses, and trees and electricity poles have been toppled by the winds.
Within the capital, a person was fatally injured after being hit by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a female was swept into approaching vehicles on a thoroughfare by a strong gust of wind, in a incident that was recorded in a widely shared car camera footage.
Flights entering and leaving the city have been halted because of the weather, while some roads and libraries are also closed.
Meanwhile Canterbury officials have issued a crisis declaration, to assist emergency management operations.
Strike Action During Extreme Conditions
The powerful gales on today come as many of school staff, physicians and civil servants take part in what has been described as a "major walkout", requesting improved salaries and workplace environments.
But the severe conditions has pressured them to modify some of their plans, with several external protests moved indoors or called off.
Like conditions are impacting the neighboring country, causing a heatwave to the remote areas.
Officials have announced burning restrictions for apprehension regarding wildfires.
