Heavy rainfall, damaging wind gusts, and coastal surf impact is expected to continue over the coming days, Prime Minister Anthony Albanese said.

Some elements of everyday life are being restored in the remnants of ex-Tropical Cyclone Alfred, with Queensland airports opening and some public transport running again on Sunday, while small businesses are being told to make the "right decision" for them in the new working week.

"Damaging wind gusts are currently occurring about Moreton Bay and extending into some northern Brisbane suburbs due to a southeasterly wind surge interacting with Ex-Tropical Cyclone Alfred," the bureau warned. "These winds are expected to ease overnight as Ex-Tropical Cyclone Alfred moves further inland."

More bad weather is set to be unleashed by ex-tropical cyclone Alfred as forecasters expect up to 700mm of rain and destructive gusts to continue into Monday.

One man died in floodwaters, the authorities said, and over 330,000 customers were without power in South East Queensland.

Australian troops were rushed to hospital on Saturday after being injured in a major road crash while responding to ex-Cyclone Alfred, which has battered a swathe of the eastern coast

Ex-tropical cyclone Alfred has officially reached the mainland in Queensland's south-east bringing with it intense winds and fears of flooding.