More than 650 properties are expected to be affected by flooding at Ipswich west of Brisbane.
The local disaster management group has issued an emergency alert for the Bremer River and Ipswich city region.
Residents in flood-prone or low-lying areas have been advised to move to higher ground, or to an evacuation centre at the Ipswich showgrounds.
Authorities expect the floodwaters in Ipswich to peak at midnight and further downstream at Goodna tomorrow morning.
The Goodna peak is not expected to be as high as initially expected, but Mayor Paul Pisasale has pleaded with people to behave sensibly.
"There is a flood in Ipswich in my area - please I don't need tourists," Councillor Pisasale said.
"I need only essential vehicles to be on the road [so] please keep away from the city.
"We've got a lot of work to do, you can have a look at it and you can watch it on the news but please keep away from the city."
Ben Naitoko's house was flooded two years ago and he says he is preparing for the worst.
"I'm trying not to feel anything at the moment, just get it done," Mr Naitoko said.
"I was a little bit nervous last night, had a sense of deja vu.
"But right now we've just got to do what we've got to do so I'll probably feel more about it in a week's time I think."
The council has placed an updated list of properties at risk of inundation on its website.
A total of 660 properties are expected to potentially be affected by flooding within Ipswich.
Residents and business owners are advised to remain on alert and vigilant regarding the predicted flood peak.
Council is putting all possible resources into the management of the flood situation and will confirm further details as they become available.
© ABC 2013
16:06 EST The weather bureau has implemented a new system of forecasting the seasonal outlook called Predictive Ocean Atmosphere Model for Australia, or POAMA.