An upper-level trough will form into a cut-off low and move east causing moisture heavy air to be above the east of the country, according to the Weatherzone.
Bureau of Meteorology (BoM) meteorologist Jonathan How said over 120 millimetres of rain fell yesterday through parts of the Hunter and also the main North Coast of NSW.
Mr How said “50 to 100 millimetres” of rain is expected across eastern NSW, including Canberra and parts of Sydney.
He said rainfall exceeded 100 millimetres in parts of Brisbane up towards the Capricorn yesterday.
Mr How added that rain will intensify “from tomorrow and then peak on Thursday and Friday” across Brisbane and the Gold Coast.
Flood warnings remain in place for parts of NSW as the BoM forecasts rain will continue to fall in much of the state.
A moderate flood warning has been issued for the Upper Hunter River in Deman.
While minor flood warnings are in place for Bellinger River, Macleay River, Macyntire and Severn Rivers, Castlereagh River, Paroo River, and Macquarie River.
Tropical Cyclone Paddy Paddy is south-east of Christmas Island and doesn’t present an immediate threat to the mainland or any offshore communities at this stage.
The category one system will continue to move slowly south before moving west and starting to weaken later on today.
Sydney is set to have a cloudy day with a chance of showers.
The BoM said rain overnight has continued adding to the state’s wet landscape.
Temperatures are expected to reach 23C.
Another thunderstorm is forecast for Queensland with a high chance of showers.
Temperatures are set to reach 26C in Brisbane.
Severe thunderstorm warnings have eased for the state.
Melbourne is expected to have a mostly sunny day according to the BoM with temperatures set to reach 26C.
But there is a possibility of showers late in the afternoon and evening.
The Northern Territory is expected to have a mostly clear day.
The BoM has forecast a slight chance of rainfall and a thunderstorm around the Cox Peninsula.
Australian Capital Territory
It is set to be partly cloudy in Canberra with a possible shower.
Temperatures are forecast to sit at 21C.
The BoM forecasts Perth to have a mostly clear day with some southerly winds.
Adelaide is set to have a cloudy day with a high chance of rainfall expected from late this morning.
A partly cloudy day is forecast for Hobart with temperatures expected to reach 23C.