Intense gales attaining velocities of up to 155km/h (96mph) have resulted in nearly 90,000 households without power and compelled officials to call off in excess of 100 air travel services, based on local media.
These gusts are impacting the entire southern region and southern sections of the North Island, per the weather forecasting body.
The nation's agencies have issued uncommon high-level wind alerts - the highest alert level - in core zones such as Wellington and Canterbury.
People have been advised to remain inside, stay off roads, and make arrangements for further electricity and network failures.
Extensive Damage and Emergency Response
This outage seems to be impacting residences mostly in the South Island, though officials say that the electricity supply was being gradually reinstated.
Local media have reported that in some places roofs have been ripped off houses, while utility poles and vegetation have been knocked down by the winds.
Across Wellington, a man was killed after being struck by a tree branch at a well-known hiking path on Tuesday.
Also in the capital, a female was pushed toward approaching vehicles on a street by a powerful blast, in a event that was recorded in a popular vehicle recording.
Aircraft services in and out of the city have been suspended as a result of the winds, whereas some roads and libraries are also closed.
Simultaneously Canterbury officials have announced a emergency situation, to assist recovery activities.
Work Stoppages During Extreme Conditions
The wild winds on this day occur while numerous of school staff, physicians and civil servants are participating in what has been called a "mega strike", requesting higher wages and enhanced employment terms.
But the severe conditions has forced them to change some of their plans, with various open-air gatherings shifted to interior venues or called off.
Similar gusts are impacting Australia, bringing a heatwave to the country's outback.
Authorities have declared fire bans for concern about wildfires.