Powerful gales attaining speeds of up to 155km/h (96mph) have caused approximately 90,000 homes lacking electricity and led agencies to call off more than 100 flights, based on local media.
These gusts are impacting the entire southern region and southern parts of the northern region, per the weather forecasting body.
Officials in New Zealand have announced infrequent red wind warnings - the most severe warning - in core zones encompassing Wellington and Canterbury.
Residents have been urged to remain inside, stay off roads, and make arrangements for more utility disruptions.
Widespread Damage and Crisis Measures
The power cut seems to be impacting households mostly in the South Island, though officials state that power was being restored progressively.
Local media have stated that in some places homes have lost their roofs, and trees and electricity poles have been knocked down by the gales.
Across Wellington, a person was killed after being struck by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a female was blown onto oncoming traffic on a thoroughfare by a strong gust of wind, in a event that was captured in a viral dashcam video.
Flights to and from the city have been halted because of the gusts, whereas some roads and libraries are also closed.
At the same time authorities in Canterbury have announced a crisis declaration, to assist recovery activities.
Work Stoppages Amid Severe Weather
These intense gusts on today coincide with tens of thousands of educators, medical professionals and government employees are participating in what has been called a "mega strike", calling for higher wages and enhanced employment terms.
But the intense climate has forced them to alter various scheduled activities, with some outdoor rallies moved indoors or abandoned.
Similar gusts are affecting Australia, ushering in a heatwave to the nation's interior regions.
Agencies have declared burning restrictions for concern about bushfires.
