Severe gales attaining velocities of up to 155km/h (96mph) have resulted in approximately 90,000 properties without power and led officials to halt more than 100 air travel services, based on domestic outlets.
These gusts are influencing the whole southern region and southern sections of the northern region, as stated by the weather forecasting body.
Officials in New Zealand have announced infrequent high-level wind alerts - the most severe warning - in core zones encompassing these major districts.
People have been advised to remain inside, refrain from journeys, and get ready for further electricity and network failures.
Extensive Destruction and Emergency Measures
The electricity loss seems to be impacting residences mainly in the South Island, although authorities state that power was being gradually reinstated.
Local media have stated that in certain areas roofs have been ripped off houses, while utility poles and vegetation have been toppled by the gusts.
Within the capital, a man was fatally injured after being struck by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a woman was pushed toward approaching vehicles on a thoroughfare by a powerful blast, in a moment that was filmed in a viral dashcam video.
Aircraft services entering and leaving the urban area have been suspended due to the weather, and various routes and public facilities are not operating.
Simultaneously authorities in Canterbury have issued a crisis declaration, to assist recovery activities.
Strike Action Amid Severe Conditions
The powerful gales on today occur while many of school staff, physicians and civil servants are engaged in what has been described as a "significant labor action", demanding higher wages and enhanced employment terms.
However the extreme weather has compelled them to alter some of their plans, with some outdoor rallies shifted to interior venues or called off.
Like conditions are also sweeping the neighboring country, ushering in a heatwave to the country's outback.
Authorities have declared flame prohibitions for concern about wildfires.