“It will peak in south-east Queensland, produce a surface trough and create gale-force winds and heavy rain.

“The 24-hour rainfall totals could go above 100 millimetres and we could see 200 millimetres or more in some places during the course of the event.

“This is all on top of the highest tides of the year we’re going to get – which, when you combine with the rivers swelling from the rain, creates the perfect recipe for beach erosion.

“Winds of up to 40 knots are possible, along with a very large swell of up to four metres or more.

“So stay away from the beach – we’re concerned about beach erosion, these tides are really big tides. If the swell is big as we’re forecasting, the sea level might approach the highest ever measured here.”

Mr Regano said the rain was forecast to start later on Friday, develop into increasing showers during the day on Saturday and intensify to general rain on Saturday night.

The rain was set to remain steady on Sunday morning and get harder and harder, continuing throughout Monday, before dropping off overnight and disappearing by Tuesday morning.

The majority of the rainfall was expected over the course of two days, with the heaviest rainfall period set to be Sunday going into Monday.

According to the weather bureau, during the next seven days – including Friday – Brisbane was forecast to record an estimated maximum of 200 millimetres, the Gold Coast was expected to receive up to about 280 millimetres and the Sunshine Coast was set for as much as 225 millimetres.

The rain was forecast to be widespread across the south-eastern corner, but also to reach inland to Toowoomba.

Mr Regano said it was possible the wet weather could also get to Fraser Island and further dampen the multiple bushfires still burning on the island.

He also said some thunderstorms were likely to be embedded in the rain mass heading for the south-east, with sustained winds coming from the surface trough.

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