The Bureau of Meteorology has predicted a weekend deluge on the New South Wales mid-north coast, warning more than 200mm of rain could fall in some locations on Saturday.
Coffs Harbour and its surrounds were subjected to torrential rain on Wednesday with the NSW State Emergency Service making several flood rescues.
It continues a wild week for the state, in which torrential rain has fallen in several coastal areas and one child has died in floodwaters.
BoM duty forecaster Rob Taggart said it would be a wet weekend.
"The rainfall could be heavier, and we could see some locations get in excess of 200mm," he said.
"It's hard to say exactly but there are a lot of things pointing to getting some of those heavy falls."
The BoM issued a severe weather warning for heavy rain for parts of the Hunter, Mid-North Coast and Northern Tablelands.
Brent Hunter from the NSW SES says they have moved some extra teams north of Sydney.
"We have wet weather continuing Saturday and Sunday with heaviest of that expected in the Hunter and Mid-North Coast region," he said.
"Impacts from that are going to include some storm damage, flash flooding and rising rivers. We are also expecting that there could be some rural isolation and some road closures for those areas."
He said they were expecting plenty of call-outs on Saturday.
"We're asking resident not to walk, ride or drive through floodwater, entering floodwater is the most dangerous thing you can do during a weather event it also puts our volunteers lives at risk and we just ask you to stay out so we don't have to get you out," he said.