Powerful winds hitting speeds of as high as 155km/h (96mph) have caused nearly 90,000 homes lacking electricity and forced authorities to cancel more than 100 aircraft departures, based on domestic outlets.
The gales are affecting the entire South Island and southern sections of the North Island, according to the weather forecasting body.
Officials in New Zealand have issued uncommon high-level wind alerts - the most severe warning - in key areas including these major districts.
Residents have been encouraged to stay indoors, refrain from journeys, and prepare for more power and communication outages.
Widespread Destruction and Crisis Response
The electricity loss is primarily influencing homes predominantly in the southern region, while officials state that power was being restored progressively.
Regional news have reported that in various locations roofs have been ripped off houses, and power lines and trees have been knocked down by the gusts.
Across Wellington, a person was fatally injured after being impacted by a falling limb at a frequent walking route on Tuesday.
Also in the capital, a female was pushed toward approaching vehicles on a road by a powerful blast, in a incident that was captured in a popular vehicle recording.
Air travel entering and leaving the city have been suspended due to the weather, and some roads and libraries are also closed.
Simultaneously authorities in Canterbury have issued a state of emergency, to facilitate emergency management operations.
Work Stoppages Amid Severe Conditions
These intense gusts on this day coincide with numerous of school staff, physicians and civil servants take part in what has been described as a "significant labor action", calling for better pay and working conditions.
Yet the intense climate has forced them to modify various scheduled activities, with various open-air gatherings relocated inside or cancelled.
Like conditions are impacting the nearby nation, bringing a high-temperature event to the country's outback.
Agencies have issued flame prohibitions for apprehension regarding bushfires.