Intense winds hitting speeds of up to 155km/h (96mph) have caused nearly 90,000 homes experiencing outages and led agencies to call off over 100 flights, as reported by regional news sources.
These gusts are affecting the complete southern region and southern parts of the North Island, according to the weather forecasting body.
New Zealand authorities have released rare severe gust advisories - the most severe warning - in core zones encompassing Canterbury and Wellington.
Locals have been advised to avoid going outside, avoid travel, and get ready for more electricity and network failures.
Widespread Impact and Emergency Response
The electricity loss seems to be impacting residences predominantly in the South Island, although officials say that energy was being restored progressively.
Domestic outlets have reported that in certain areas roofs have been ripped off houses, whereas trees and electricity poles have been brought down by the gusts.
Across Wellington, a person was lost his life after being impacted by a tree branch at a popular trail walking spot on Tuesday.
Additionally in the city, a female was swept into approaching vehicles on a street by a strong gust of wind, in a incident that was captured in a viral dashcam video.
Aircraft services to and from the city have been suspended due to the gusts, and various routes and public facilities are not operating.
Simultaneously local leaders have issued a crisis declaration, to facilitate emergency management operations.
Work Stoppages During Extreme Weather
The powerful gales on this day come as tens of thousands of educators, medical professionals and government employees take part in what has been called a "significant labor action", calling for better pay and working conditions.
However the severe conditions has compelled them to alter certain arrangements, with some outdoor rallies relocated inside or called off.
Similar gusts are impacting the neighboring country, causing a period of extreme heat to the nation's interior regions.
Authorities have declared burning restrictions for fear of bushfires.
