Powerful gales hitting velocities of approximately 155km/h (96mph) have resulted in approximately 90,000 households lacking electricity and led agencies to halt over 100 air travel services, according to domestic outlets.
The gales are influencing the whole South Island and southern parts of the North Island, according to the national weather agency.
The nation's agencies have released uncommon high-level wind alerts - the highest alert level - in central regions such as these major districts.
Residents have been advised to remain inside, refrain from journeys, and make arrangements for more utility disruptions.
Widespread Damage and Crisis Response
The electricity loss appears to be affecting homes predominantly in the southern region, though officials report that the electricity supply was being slowly brought back.
Regional news have indicated that in certain areas roofs have been ripped off houses, whereas utility poles and vegetation have been brought down by the gusts.
Across Wellington, a man was killed after being hit by a tree branch at a well-known hiking path on Tuesday.
Additionally in the city, a female was swept into oncoming traffic on a thoroughfare by a powerful blast, in a incident that was captured in a viral dashcam video.
Flights in and out of the metropolis have been halted due to the weather, and certain highways and community centers are not operating.
At the same time authorities in Canterbury have announced a emergency situation, to support emergency management operations.
Strike Action Alongside Harsh Conditions
These intense gusts on Thursday occur while numerous of teachers, doctors and other public workers take part in what has been described as a "significant labor action", demanding improved salaries and workplace environments.
However the severe conditions has compelled them to change certain arrangements, with some outdoor rallies moved indoors or called off.
Like conditions are affecting the nearby nation, bringing a high-temperature event to the nation's interior regions.
Authorities have issued fire bans for fear of wildfires.