Severe winds hitting velocities of up to 155km/h (96mph) have resulted in around 90,000 households experiencing outages and led authorities to cancel over 100 flights, according to domestic outlets.
The winds are affecting the complete southern region and lower areas of the North Island, as stated by the country's meteorological service.
The nation's agencies have issued infrequent high-level wind alerts - the top caution category - in core zones including Wellington and Canterbury.
People have been advised to stay indoors, refrain from journeys, and prepare for additional power and communication outages.
Widespread Destruction and Crisis Response
The electricity loss is primarily influencing households predominantly in the South Island, while officials state that power was being slowly brought back.
Local media have stated that in certain areas structures have suffered roof damage, while trees and electricity poles have been toppled by the winds.
Across Wellington, a person was killed after being impacted by a wooden fragment at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was blown onto approaching vehicles on a road by a powerful blast, in a event that was captured in a widely shared car camera footage.
Aircraft services in and out of the urban area have been suspended as a result of the winds, and some roads and libraries are not operating.
Simultaneously authorities in Canterbury have issued a crisis declaration, to assist disaster response efforts.
Labor Protests During Extreme Conditions
The wild winds on today occur while tens of thousands of school staff, physicians and civil servants are participating in what has been termed a "major walkout", calling for higher wages and enhanced employment terms.
However the intense climate has compelled them to modify various scheduled activities, with some outdoor rallies relocated inside or called off.
Comparable winds are affecting the neighboring country, bringing a heatwave to the nation's interior regions.
Agencies have declared flame prohibitions for apprehension regarding forest fires.