The weather bureau has issued a storm warning for people in West and South Gippsland and parts of Central, East Gippsland, North Central and North East Forecast Districts.
Showers and isolated thunderstorms over central and western districts will tend to a band of rain later this evening then move east overnight.
HEAVY RAIN which may lead to FLASH FLOODING is expected to develop over parts of eastern Victoria during the early hours of Tuesday then contract east and clear later in the day.
Over the nine hours, falls of 30 to 50mm are expected, although thunderstorm activity may result in isolated higher falls of 50 to 80mm.
Locations which may be affected include Morwell, Traralgon, Sale, Moe, Bairnsdale and Falls Creek.