A severe weather warning is in place for four states this morning.
“Unseasonal rainfall” will be seen across eastern WA as a stagnant trough slams into an “unusually moist air mass”.
As it does it will increase the risk of flash flooding and large hail.
The Bureau of Meteorology (BoM) has issued a severe weather warning for Moora, Giles, Gingin, Lancelin, Wongan Hills and Yanchep.
“Severe thunderstorms are likely to produce damaging winds, large hailstones and heavy rainfall that may lead to flash flooding in the warning area over the next several hours,” it said.
A weather warning is also in place for Borroloola in the Northern Territory and Rockhampton, Yeppoon, Dunbar and Byfield in Queensland.
The BoM warned heavy rainfall could lead to flash flooding in the areas.
Damaging winds and large hail has also been forecast for the North West Pastoral district in South Australia, with Amata and parts of the Great Victoria Desert put on alert.
New South Wales
New South Wales residents can expect a mostly cloudy day, with the potential for a few scattered showers along the coast and adjacent ranges and over the northern inland border.
There is a chance of a thunderstorm further north, the BoM said.
Temperatures will hit a low of 17C and a high of 24C.
Melburnians can expect a sunny morning, as temperatures climb from 8C to 20C.
Cloud cover will increase during the afternoon with a 20 per cent chance of a shower in the evening.
Similar conditions will be experienced in Adelaide, which will be partly cloudy with a slight chance of a shower later tonight.
Light winds will become south-westerly 20 to 30 km/h in the middle of the day then tending southerly in the evening.
Temperatures will hit a high of 22C.
Tasmanians will need to whip out the umbrella today with showers forecast for both Launceston and Hobart.
In Hobart there’s a 90 per cent chance of showers, most likely in the afternoon and evening.