Powerful gales hitting velocities of approximately 155km/h (96mph) have caused approximately 90,000 properties lacking electricity and forced authorities to cancel over 100 aircraft departures, based on domestic outlets.
The winds are affecting the whole southern region and southern sections of the northern region, per the weather forecasting body.
Officials in New Zealand have announced rare high-level wind alerts - the top caution category - in core zones encompassing Wellington and Canterbury.
People have been advised to avoid going outside, avoid travel, and make arrangements for further utility disruptions.
Widespread Impact and Emergency Response
The electricity loss appears to be affecting residences mainly in the South Island, while officials say that energy was being gradually reinstated.
Local media have indicated that in some places roofs have been ripped off houses, while trees and electricity poles have been knocked down by the gales.
Within the capital, a individual was killed after being impacted by a falling limb at a frequent walking route on Tuesday.
Also in the capital, a female was swept into oncoming traffic on a street by a intensive burst, in a incident that was recorded in a widely shared car camera footage.
Aircraft services entering and leaving the urban area have been suspended due to the gusts, whereas various routes and public facilities are shut down.
Simultaneously authorities in Canterbury have announced a crisis declaration, to support recovery activities.
Strike Action Alongside Harsh Conditions
The powerful gales on Thursday coincide with many of educators, medical professionals and government employees are participating in what has been termed a "significant labor action", demanding improved salaries and workplace environments.
Yet the extreme weather has pressured them to alter certain arrangements, with several external protests relocated inside or called off.
Comparable winds are also sweeping Australia, bringing a heatwave to the nation's interior regions.
Agencies have declared burning restrictions for apprehension regarding bushfires.