Severe weather warnings are affecting the country's southeast coast, with thunderstorms and strong winds expected across two states.
Victoria is expecting heavy rainfall and damaging winds, while South Australia will be hit with severe thunderstorms.
Meanwhile, Queensland is expecting strong winds, but clear skies.
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Victoria bears the brunt
Parts of Victoria have been issued a Severe Weather warning, with heavy rainfall expected in Mallee, North Central, Wimmera and parts of Central, East Gippsland, South West, Northern Country, North East and West and South Gippsland Forecast Districts on Wednesday as a cold front moves through the state.
Flash flooding is possible for the Malle, Wimmera and South West Districts on Wednesday morning.
Up to 60mm of rain is expected within 24 hours, with some isolated extreme rainfall reaching up to 100mm in some areas.
The state will also be hit with damaging northerly wind gusts of 90-100km/h over the Grampians during the morning, moving into the central ranges by the afternoon.
Damaging wind gusts could possibly affect the alpine areas as well.
Severe thunderstorms are also possible across western Victoria this afternoon.
South Australia lashed by storms
Severe weather will also unleash on South Australia, with heavy rainfall and flash flooding expected.
Parts of Riverland, Murraylands, Upper South East and Lower South East districts were issued with a severe weather warning last night.
The weather warning was cancelled for the Mid-North and Riverland districts but it remains in the Meningie, Tailem Bend and Coonalpyn areas.
Flash flooding is expected today in these areas as a slow-moving cold front moves over the state.
Overnight, some areas were soaked with quick bouts of rain.
Morphettville saw 29mm of rain in one hour at 3.45am.
Sturt Creek recorded 20mm of rain in 30 minutes, while Bellevue Heights recorded 10mm in the same time span.
Sever Strom warnings have been cancelled in the Adelaide Metropolitan, Mount Lofty Ranges, Upper South East and North East Pastoral districts areas.
Tasmania may also experience strong winds in the Far North West Coast, East of Flinders Island, Upper East Coast, Lower East Coast, South East Coast and Central West Coast regions on Wednesday and Thursday.
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