Powerful gusts reaching velocities of approximately 155km/h (96mph) have caused approximately 90,000 homes without power and compelled officials to call off over 100 flights, as reported by domestic outlets.
The winds are impacting the complete South Island and southern parts of the northern region, according to the national weather agency.
Officials in New Zealand have released rare red wind warnings - the top caution category - in key areas such as Canterbury and Wellington.
Locals have been advised to avoid going outside, refrain from journeys, and make arrangements for further utility disruptions.
Broad Damage and Emergency Measures
The power cut appears to be affecting homes mainly in the southern region, though officials say that power was being gradually reinstated.
Local media have indicated that in certain areas homes have lost their roofs, and utility poles and vegetation have been brought down by the gales.
Across Wellington, a individual was lost his life after being hit by a falling limb at a popular trail walking spot on Tuesday.
Also in the capital, a individual was blown onto moving cars on a road by a intensive burst, in a moment that was captured in a viral dashcam video.
Aircraft services to and from the city have been suspended because of the winds, while various routes and public facilities are also closed.
Simultaneously authorities in Canterbury have announced a emergency situation, to support emergency management operations.
Work Stoppages Amid Severe Weather
The wild winds on today come as tens of thousands of school staff, physicians and civil servants are participating in what has been described as a "mega strike", calling for improved salaries and workplace environments.
But the extreme weather has compelled them to modify various scheduled activities, with various open-air gatherings moved indoors or abandoned.
Comparable winds are impacting the nearby nation, ushering in a heatwave to the nation's interior regions.
Authorities have issued flame prohibitions for apprehension regarding forest fires.