Authorities are warning of the potential for flash flooding across Gippsland and the north-east of the state with rain of up to 60 millimetres today and tomorrow.
Bureau of Meteorology forecaster Hannah Marsh, said the rain had already started for some, including 45mm in one hour at Warragul in west Gippsland.
"We're already starting to see some shower activity out east, so we're expecting to see that increase as the day does progress," she said.
But she said that is expected to ease on Saturday.
"We do have a high pressure system that we're expecting to move through and gradually start easing the rainfall."
Windy, wet weather
SES Regional agency commander Neil Payne said the north east was in for a wet couple of days with the potential for some areas to get up to 100mm of rain today.
"Across the whole of the north-east it will be widespread 20-40mm , 30-60mm up towards the ranges and we could see 80-100mm in storm cells as they develop."
Mr Payne said those totals could be even higher if storm cells stall, with the chance of localised flash flooding.
Rivers in the region are already high, with an initial minor flood warning already in place for the Kiewa River.
Mr Payne said they already have flood watches out for a number of catchments in the north east and Gippsland.
"The Ovens and King which there is a flood watch out there, the Upper Murray and Mitta Mitta we're keeping a close eye on and also Seven and Castle Creeks over towards Euroa."
Mr Payne said rain is likely to continue tomorrow in north east in the order of 15-40mm as the system contracts towards the east, however the region could then see some damaging winds.
"We're also going to get some windy and quite gusty conditions and we could get some gusts up to about 100 kilometres per hour, certainly within the alpine peaks."
SES urges road safety
State Emergency Service community resilience coordinator Jane Fontana urged people not to drive through flood waters.
"We saw far too many incidents about a week ago of people being rescued from their stranded cars," she said.
Five people were rescued from the top of their vehicle in Gippsland's most recent floods.
"That takes critical response crews away from impacted communities that really need them," she said.
"It can take 15 centimetres of flowing water to take away a small car, and it can be hard to judge."ABC