Intense gusts reaching velocities of up to 155km/h (96mph) have left nearly 90,000 households experiencing outages and forced officials to cancel over 100 aircraft departures, as reported by local media.
The winds are impacting the entire South Island and southern parts of the North Island, as stated by the national weather agency.
Officials in New Zealand have announced infrequent high-level wind alerts - the top caution category - in core zones such as these major districts.
People have been advised to remain inside, refrain from journeys, and prepare for additional utility disruptions.
Widespread Destruction and Emergency Response
The electricity loss appears to be affecting households mainly in the southern region, while officials state that the electricity supply was being restored progressively.
Regional news have stated that in some places structures have suffered roof damage, while utility poles and vegetation have been brought down by the gales.
Across Wellington, a person was lost his life after being struck by a falling limb at a frequent walking route on Tuesday.
Additionally in the city, a female was blown onto approaching vehicles on a thoroughfare by a intensive burst, in a incident that was recorded in a viral dashcam video.
Flights entering and leaving the city have been cancelled due to the winds, whereas certain highways and community centers are not operating.
At the same time Canterbury officials have declared a crisis declaration, to assist recovery activities.
Strike Action Alongside Severe Conditions
The powerful gales on Thursday coincide with numerous of school staff, physicians and civil servants are participating in what has been called a "major walkout", calling for improved salaries and workplace environments.
But the extreme weather has forced them to change certain arrangements, with several external protests shifted to interior venues or called off.
Like conditions are impacting Australia, ushering in a high-temperature event to the country's outback.
Authorities have issued burning restrictions for concern about forest fires.