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

Significant damage and power outages are possible in the densely populated region of Queensland, where tropical cyclones impacts are not uncommon but direct landfalls are.

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.