Powerful winds attaining velocities of as high as 155km/h (96mph) have caused around 90,000 homes without power and compelled authorities to cancel more than 100 flights, as reported by local media.
The winds are affecting the complete southern region and southern parts of the North Island, according to the national weather agency.
The nation's agencies have released infrequent high-level wind alerts - the top caution category - in central regions such as Wellington and Canterbury.
Residents have been urged to stay indoors, refrain from journeys, and get ready for further power and communication outages.
Extensive Impact and Crisis Measures
This outage is primarily influencing households mainly in the southern region, while agencies report that power was being gradually reinstated.
Regional news have stated that in certain areas roofs have been ripped off houses, and trees and electricity poles have been knocked down by the gales.
In Wellington, a person was killed after being impacted by a tree branch at a well-known hiking path on Tuesday.
Also in the capital, a female was blown onto approaching vehicles on a road by a intensive burst, in a event that was captured in a widely shared car camera footage.
Aircraft services in and out of the urban area have been cancelled as a result of the winds, while some roads and libraries are shut down.
Simultaneously Canterbury officials have issued a emergency situation, to assist disaster response efforts.
Strike Action During Extreme Conditions
The wild winds on this day coincide with tens of thousands of school staff, physicians and civil servants are engaged in what has been described as a "mega strike", calling for higher wages and enhanced employment terms.
But the severe conditions has pressured them to alter certain arrangements, with some outdoor rallies relocated inside or abandoned.
Comparable winds are affecting the neighboring country, bringing a heatwave to the nation's interior regions.
Officials have announced fire bans for fear of forest fires.