A warning from MetService that the severe weather moving in on Tuesday afternoon, is likely to cause flooding and slips on hillsides.
Heavy rain and gale force winds are expected to lash Northland, Coromandel, Western Bay of Plenty and Northern Gisborne.
Weather Ambassador Bob McDavitt says soil already saturated from the storm on the weekend hasn't had time to properly drain out.
He says trees and buildings already weakened by the storm on the weekend may sustain further damage and cause power cuts.
On Wednesday the severe southeast gale is expected to move towards Hawke's Bay, Wairarapa, Marlborough and Canterbury.
The forecast follows hard on the heels of the weekend storm
which was said to be the worst in years.
Four people died as a direct result of the storm, including two men
on a fishing vessel which ran aground in rough seas near Opotiki.
Two other crew members were rescued from the shoreline
cliffs.
A man in an outrigger canoe also drowned in stormy seas near Mount
Maunganui. And a 38-year-old man died in a Meremere house fire
believed to have been started by a candle being used after a power
cut.
The storm came at a bad time for Northland farmers tied up with
lambing and calving.
In the Far North and Whangarei, heavy wind and rain felled trees, lashed roads and flooded low lying areas.
The Whangarei District Council is waiting until the rest of the week's weather hits before it tallys up the cost of damage over the weekend.
Council spokeswoman Ann Midson says damage from the storm will probably cost between $2 million and $3 million to repair.
The weather also caused sewage spills in the Whangarei Harbour.
The Council is warning people not to swim upstream from Onerahi for the next week or collect shellfish from the whole harbour area for 28 days.
Waste and Drainage Manager Gary Oldcorn says at this stage, sewage is known to have spilt in the Okara Park, Onerahi, Hatea, Kissing Point, Riverside and Lime Burners Creek Areas.
He says the situation is not unusual as heavy rain inundates sewage systems and causes them to overflow.
Federated Farmers Northland President, Denis Anderson, says farmers now face a lot of work cleaning up and dealing with stressed stock. He says farmers lambing at this time of year will probably face losses from the wet and calves will be slower.
Anderson says the last thing farmers need is the extra rain predicted later this week.
The eastern Waikato township of Te Aroha also has a massive clean up job on its hands.
Hundreds of trees were uprooted - 70 at the golf course alone - and windows were blown out at the council building and the hospital.
Matamata-Piako District Council mayor Hugh Vercoe says the volunteer fire brigade was inundated with calls. He says the storm brought the worst winds to hit the area in 30 years.
Mount Ruapehu skifields have been reopened.
More than 10,000 people were evacuated on Sunday because of the storm on the mountain and many motorists were stranded at Whakapapa.
Skifields manager Chris Thrupp says conditions have eased and staff have been helping stranded motorists off the mountain.
The South Island is expected to bear the brunt of the next lot
of bad weather with heavy rain, strong winds and snow forecast for
Canterbury this week.
For up to date weather forecasts for your region got
to the
onenews.co.nz weather page