Aucklanders can anticipate a wet deluge just in time for rush hour tonight.
Heavy rain warnings have been issued for Northland and Auckland, with the torrent expected in Auckland this afternoon, and continuing into Thursday.
Metservice has issued a warning that the rainfall may reach warning amounts, meaning 60mm in 9 hours, or 70mm in 12 hours, and a severe weather watch has been issued.
Regions affected include Auckland, and north of Orewa, including Great Barrier Island.
People in these areas are advised to stay up to date with the latest forecasts in case this watch is upgraded to a warning, or further areas are added.
At least two central North Island highways have already been affected by heavy rain, with State Highway 1 between Bulls and Hunterville closed by flooding and SH3 north of Urenui partially blocked by a slip.
Further south, a separate slow-moving band of rain continues to move across the centre of the island today.