Powerful gales hitting velocities of up to 155km/h (96mph) have caused around 90,000 properties experiencing outages and led authorities to cancel more than 100 aircraft departures, as reported by regional news sources.
The winds are impacting the entire South Island and lower areas of the North Island, according to the national weather agency.
The nation's agencies have issued infrequent red wind warnings - the highest alert level - in key areas encompassing these major districts.
People have been advised to stay indoors, stay off roads, and make arrangements for more utility disruptions.
Extensive Damage and Crisis Response
The electricity loss is primarily influencing residences mostly in the southern region, though agencies report that power was being restored progressively.
Domestic outlets have reported that in some places roofs have been ripped off houses, while utility poles and vegetation have been knocked down by the winds.
Across Wellington, a man was lost his life after being impacted by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a woman was pushed toward moving cars on a thoroughfare by a strong gust of wind, in a event that was recorded in a popular vehicle recording.
Air travel in and out of the city have been halted because of the weather, and some roads and libraries are not operating.
Simultaneously authorities in Canterbury have issued a crisis declaration, to support disaster response efforts.
Work Stoppages Amid Harsh Weather
The powerful gales on today come as tens of thousands of educators, medical professionals and government employees take part in what has been described as a "mega strike", demanding better pay and working conditions.
But the intense climate has forced them to modify certain arrangements, with various open-air gatherings relocated inside or called off.
Similar gusts are also sweeping the neighboring country, bringing a high-temperature event to the nation's interior regions.
Agencies have issued flame prohibitions for fear of bushfires.