Intense winds attaining velocities of up to 155km/h (96mph) have caused nearly 90,000 homes without power and forced authorities to halt in excess of 100 flights, based on local media.
The winds are impacting the complete southern region and lower areas of the northern region, according to the weather forecasting body.
The nation's agencies have released rare high-level wind alerts - the most severe warning - in key areas encompassing these major districts.
Residents have been encouraged to remain inside, avoid travel, and get ready for more utility disruptions.
Broad Damage and Crisis Response
The power cut seems to be impacting households mainly in the southern region, while officials state that the electricity supply was being gradually reinstated.
Local media have stated that in various locations roofs have been ripped off houses, whereas power lines and trees have been knocked down by the gusts.
In Wellington, a individual was killed after being hit by a wooden fragment at a frequent walking route on Tuesday.
Additionally in the city, a individual was pushed toward oncoming traffic on a street by a strong gust of wind, in a event that was captured in a widely shared car camera footage.
Aircraft services to and from the urban area have been halted as a result of the gusts, and various routes and public facilities are not operating.
Meanwhile authorities in Canterbury have declared a state of emergency, to facilitate recovery activities.
Labor Protests During Harsh Weather
The powerful gales on today come as numerous of educators, medical professionals and government employees are engaged in what has been termed a "mega strike", requesting improved salaries and workplace environments.
However the severe conditions has compelled them to modify various scheduled activities, with some outdoor rallies relocated inside or abandoned.
Similar gusts are also sweeping the nearby nation, ushering in a high-temperature event to the remote areas.
Agencies have declared fire bans for apprehension regarding bushfires.