Vector crews are closely monitoring weather reports as wild weather - including heavy rain and strong gusts - are due to hit the upper North Island.
The MetService has issued a number of severe weather warnings for strong winds and heavy rains for areas including Northland, the Coromandel Peninsula, Gisborne, Auckland, Great Barrier Island and Waikato from Cambridge northwards.
Rain accumulations of between 100mm to 140mm are expected in parts of the Coromandel Peninsula between 6pm and 11pm tomorrow.
In Auckland, strong winds are set to turn into severe gales gusting up to 120km/h in exposed parts of the city between 4pm and the early hours of tomorrow morning.
Heavy rain is expected in northern parts of the city later this afternoon and this evening.