Intense winds reaching velocities of up to 155km/h (96mph) have left around 90,000 homes lacking electricity and forced authorities to halt in excess of 100 flights, according to local media.
The gales are impacting the whole southern region and southern parts of the North Island, per the weather forecasting body.
New Zealand authorities have released infrequent high-level wind alerts - the highest alert level - in central regions encompassing these major districts.
Residents have been advised to remain inside, refrain from journeys, and prepare for additional electricity and network failures.
Extensive Damage and Emergency Measures
The power cut is primarily influencing homes mainly in the southern region, although officials say that power was being gradually reinstated.
Local media have indicated that in some places roofs have been ripped off houses, and utility poles and vegetation have been brought down by the winds.
Within the capital, a person was killed after being struck by a falling limb at a well-known hiking path on earlier this week.
Also in the capital, a individual was pushed toward approaching vehicles on a street by a intensive burst, in a event that was captured in a popular vehicle recording.
Air travel entering and leaving the city have been halted because of the winds, while some roads and libraries are shut down.
Simultaneously authorities in Canterbury have declared a emergency situation, to support emergency management operations.
Work Stoppages During Severe Conditions
The powerful gales on today occur while numerous of teachers, doctors and other public workers are engaged in what has been termed a "mega strike", requesting higher wages and enhanced employment terms.
Yet the severe conditions has compelled them to modify some of their plans, with various open-air gatherings moved indoors or abandoned.
Similar gusts are also sweeping the neighboring country, causing a period of extreme heat to the nation's interior regions.
Agencies have issued burning restrictions for concern about forest fires.