Heavy rain tipped for Victoria

Flooded parts of Northern Victoria could see more stream rises with heavy rain forecast for Wednesday and Thursday.

A severe weather warning is in place for large parts of the state, with a moderate flood warning also posted for the Loddon River.

"Most of the west and central parts of the state will see rainfall and that will continue into Thursday," Bureau of Meteorology forecaster Beren Bradshaw told AAP.

A band of bad weather is moving across from South Australia and the rain will start to hit northern Victoria on Wednesday afternoon.

"There's a good chance that we will see renewed stream rises," Ms Bradshaw said.

Residents have been warned to watch out for heavy rain leading to flash flooding across the Mallee and Wimmera districts, with rainfall totals of 10mm to 25mm likely.