There's been a brief reprieve from the rain for Aucklanders overnight but more is on the way.
Most of the Super City is under an "orange" heavy rain warning.
In Northland, a "red" heavy rain warning came into force on Tuesday morning until at least early on Wednesday. That red warning will also come into effect in Auckland north of Orewa from 4pm.
Anyone travelling is still being advised to take extreme care, with many roads still impacted by slips and flood water.
Below is MetService's latest forecast:
Short forecast for Auckland and Coromandel - Tuesday
Rain becomes persistent on Tuesday evening, with some heavy falls and the chance of a thunderstorm.
Short forecast for Northland - Tuesday
Rain becoming persistent this evening, with some heavy falls and the chance of a thunderstorm.
Extended forecast for North Island - Wednesday
Rain for the northern half, possibly heavy from Auckland to Bay of Plenty and Rotorua. Thunderstorms are possible in southern Northland and Auckland before dawn.
Short forecast for rest of New Zealand - Tuesday
- Waikato to Taranaki, including Bay of Plenty and Gisborne, also the central high country: Isolated showers, turning to rain in the eastern areas in the afternoon, with possible thunderstorms in Waikato from the evening
- Whanganui to Wellington, also Hawke's Bay and Wairarapa: Mostly cloudy. Isolated afternoon or evening showers
- Nelson, Buller, Westland, Fiordland, Marlborough and Canterbury: Cloudy periods with isolated showers, some possibly heavy and thundery inland from the afternoon. Low cloud about the Canterbury coast breaking for a time during the day
- Otago and Southland: Mainly fine. Scattered showers in the afternoon and evening, some heavy and possibly thundery
- Chatham Islands: Fine.
