MetService has issued new orange heavy rain warnings for the already sodden Nelson and Tasman districts.
The warning for Tasman, west of Motueka, runs from 3am Thursday to 9pm, and anticipates 120 to 150mm of rain, with more possible around the coast.
The warningfor the remainder of the district, as well as the Nelson District, Richmond and Bryant Ranges including the Rai Valley, and the Marlborough Sounds, is from 6am to 9pm on Thursday, and forecasts 80 to 100mm of rain about the Sounds and ranges.
More than 300mm of rain fell in some areas late last week, leading to widespread flooding, slips and road closures.
MetService said it was a frosty start to the day for Canterbury and Marlborough, but overall Tuesday was forecast to be relatively settled apart from the odd shower or two.