As parts of southeast and southwest Queensland either brace for flooding or begin the clean-up after already going through the ordeal, the Bureau of Meteorology is forecasting the worst possible news - more heavy rain.
The bureau says by Thursday an area south of Bundaberg and east of Roma could be facing rainfall of between 50mm and 100mm, with pockets over 100mm in some areas.
Senior forecaster Bryan Rolleston said Bundaberg may be hit again, the Sunshine Coast could be seriously affected and the Darling Downs, "which could be a problem for the Condamine region".
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That region covers the towns of Dalby and Condamine and the system also flows into the Balonne River, where towns are bracing for near record floods.
The weather bureau has upgraded its flood peak prediction for St George to higher than 14 metres, which is expected to swamp the town next Monday or Tuesday.
Last March's flood peaked at 13.39 metres.
The Balonne River on Tuesday morning was at 12 metres.
Further up the Balonne, Surat is also preparing for a record flood peak.
Mr Rolleston said Warwick could also be in trouble again, and the Gold and Sunshine Coasts, along with Brisbane, were facing another drenching.
He said it was too early to pinpoint the exact areas which could be affected.
"The trouble is we are looking at the modelling and it changes its bulls-eyes from day to day.
"All I can tell you is it's a big area from about south of Bundaberg and east of Roma and within that there'll be some smaller zones of over 100mm."
Mr Rolleston said some areas could expect falls similar to what was experienced over the Christmas weekend.
