Flash flooding is possible across south-east Queensland, including on the Sunshine Coast, which has had intense rain in recent days. ( ABC News: Janel Shorthouse )
Flash flooding, large hail and wind gusts of up to 90 kilometres an hour are possible for south-east Queensland with two rounds of storms forecast for Monday.
Across the state multiple warnings are in place, including for major flooding for the Mary River in the Gympie region, after days of heavy rain.
Flooding along Widgee Creek, along the Wide Bay Highway near Gympie, on Sunday morning. ( Supplied: Infinity Flights Photography )
Bureau of Meteorology senior meteorologist Felim Hanniffy said storms were forecast across Brisbane, Gold Coast and Sunshine Coast during the morning rush with another round possible in the afternoon and early evening.
"There is a risk of severe storms around the south-east, broadly possible for areas like the Sunny Coast, Brisbane, the Gold Coast and likely for areas west of Ipswich and across eastern Darling Downs," he said.
"Depending on how the first round of storms go through in the morning that could reduce the severity risk for some areas as well."
Mr Hanniffy said there was also the chance of very dangerous thunderstorms in inland areas during the afternoon and early evening.
Severe storms are likely across the Lockyer Valley, Scenic Rim and South Burnett on Monday, according to the bureau.
A flooded bridge over Sandy Creek just outside Clermont on Sunday. ( Supplied: Jess Keyte )
The recent wet weather, which has seen more than 200 millimetres of rain fall within six hours in some areas, combined with more intense falls, could lead to flash flooding in some areas.
The bureau forecasts the Mary River at Tairo may peak above the 12-metre major flood level on Monday, while minor flooding is possible during the day at Maryborough with it expected to peak in the evening, forcing several bridge closures.
On Sunday, an alert for flash flooding for Clermont was lifted. ( Supplied: Action Helicopters Capella )
Mr Hanniffy said the severe storm risk was driven by a stagnant humid air mass that has persisted for more than a week.
He said it was likely the storm risk would ease in parts of the south-east over the coming days with some uncertainty over if it would return later in the week.
"Brisbane, the Gold Coast and the Sunshine Coast should see conditions ease by Tuesday but certainly some areas in south-east Queensland, particularly inland areas like Wide Bay-Burnett, will still maintain that severe storm risk into Tuesday," he said.
