Powerful winds reaching speeds of up to 155km/h (96mph) have resulted in around 90,000 properties lacking electricity and led agencies to cancel more than 100 air travel services, according to regional news sources.
The winds are impacting the entire South Island and southern parts of the North Island, according to the weather forecasting body.
New Zealand authorities have issued rare severe gust advisories - the most severe warning - in central regions including Wellington and Canterbury.
People have been urged to avoid going outside, stay off roads, and make arrangements for more utility disruptions.
Widespread Damage and Emergency Response
This outage seems to be impacting households mainly in the South Island, although officials say that power was being restored progressively.
Regional news have indicated that in some places structures have suffered roof damage, while trees and electricity poles have been knocked down by the gusts.
In Wellington, a individual was killed after being impacted by a wooden fragment at a frequent walking route on Tuesday.
Meanwhile in Wellington, a female was pushed toward approaching vehicles on a road by a intensive burst, in a moment that was captured in a widely shared car camera footage.
Flights to and from the urban area have been halted because of the weather, whereas some roads and libraries are shut down.
Simultaneously Canterbury officials have issued a crisis declaration, to support disaster response efforts.
Strike Action During Extreme Weather
These intense gusts on today occur while many of school staff, physicians and civil servants take part in what has been termed a "mega strike", demanding improved salaries and workplace environments.
Yet the severe conditions has compelled them to alter various scheduled activities, with some outdoor rallies moved indoors or abandoned.
Like conditions are affecting the neighboring country, ushering in a period of extreme heat to the remote areas.
Officials have issued burning restrictions for concern about wildfires.
