Heavy wind and rain is buffeting much of the country, with gales, low cloud and showers set to stay until the weekend.
MetService said a broad trough over the Tasman Sea was expected to cross over New Zealand today, bringing with it a number of cold fronts and rain for much of the country.
The central west areas of the North Island and northwest parts of the South Island were expected to be hit the hardest.
Westland, Buller and Nelson would get the heaviest rainfall, with Tararua, Mt Taranaki and Tongariro National Park not far behind.
"In the 12 hours from 9am to 9pm today Mt Taranaki can expect 80 to 120mm of rain. The heaviest falls should occur Wednesday afternoon when intensities may reach 15 to 20mm/hr."
MetService was warning streams and rivers in all those areas could rise quickly and surface flooding and slips were possible.
Forecaster Daniel Corbett said weather would be "unsettled" for the next two or three days but should peak by the weekend.
"The wind and the rain will slowly pass today. There's another little blast that comes through tomorrow and then we should be picking up by Friday and hopefully peaking by the weekend," he said.
Temperatures may drop slightly over the next few days, as northerly winds change to southerlies, but they should rise again by Saturday.
"A lot of this weather should be long gone by then," Corbett said.
- Fairfax Media
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