The heaviest rain has passed with some areas getting 79mm of rain this morning but Metservice says there is still potential for more
Vector says restoring power to some homes and hot water pilot lines will take well into next week.
More than 100 Vector staff are responding to to downed power lines, faults, power cuts and other damage throughout the region.
Roofs came off, hundreds of trees were felled and power lines were brought down across Auckland.
However, with cyclone force winds as high as 213km/h striking Auckland overnight, questions are being asked about whether forecasters and authorities were caught unprepared.
Northern areas have been lashed by tornadoes while the south has been hit by snow and cold temperatures.
Parts of the South Island have had hail and snow, while severe gales and thunderstorms are expected over much of New Zealand throughout the day.
That's according to NIWA's Seasonal Climate outlook for April to June. However, the cold weather won't be completely kept at bay.
Severe weather warnings are in place for some areas, with only a couple of areas likely to avoid a soaking.
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