WHILE attention is focused on two low pressure systems off north Queensland, it is a trough moving across from central Australia that will deliver the best chance of rain for the Capricornia region.
A monsoon trough is situated over the northern Coral Sea, with two lows - one near the Solomon Islands and one east of Cooktown.
Bureau of Meteorology forecaster Brendan Bradford on Monday said the two lows were in an unfavourable environment for further development.
"A trough that is moving from central Australia will be more of a major system for us," he said.
"It has been hovering over the Northern Territory for a bit over a week and will start moving eastwards over the next few days."
Mr Bradford said it would arrive in the region late Wednesday night.
"It will bring shower activity, similar to last week. There will be some decent totals over 24 hours but we won't see widespread rainfall.
"There will be shower and storm activity but it will be a little bit hit and miss from Thursday through to the weekend."
Mr Bradford said there was a medium chance of showers on Tuesday and Wednesday, with a high chance of showers and thunderstorms on Thursday and Friday.
Gladstone is heading for a top of 31 degrees on Tuesday and Wednesday, with 33 forecast for Thursday and Friday.