Thunderstorms are forecast to bring heavy rain, large hail and powerful winds on Tuesday, rolling east in a band stretching from Toowoomba to the Sunshine Coast.
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Bureau of Meteorology meteorologist Andrew Bufalino said Tuesday and Thursday would be the main days this week for heavy storms to lash south-east Queensland.
A large trough would move through south-east Queensland on Tuesday and would meet a change pushing up the coast to produce unsettled weather for several days, he said.
"We have an upper trough coming through so we will have a very unsettled air mass over south-east Queensland," he said.
"And we also have a south-easterly change pushing up the coast and that should drive showers and storms across south-east Queensland."
Temperatures could reach 30 degrees on Tuesday in the Brisbane region, dropping slightly to 26 degrees by Thursday and 24 degrees by the weekend.
Mr Bufalino said Tuesday's storms would begin in Warwick and Toowoomba in the "late morning" before forming a band across to the Sunshine Coast where the heavy rain would hit.
"The most likely area for activity will be north-west of Warwick to Brisbane," he said.
"So anywhere north or the west of that should be in the firing line for some storm activity.
"The most severe activity will be from Maroochydore down to Toowoomba."
People in the region around Brisbane and further eastwards should expect lighter falls in the later morning.
"There is some potential for thunderstorms around Brisbane and the Gold Coast in the late morning to early afternoon," he said.
"But the most serious activity should be further north of Brisbane."
On Monday, a second wave of storms approaching Brisbane from Gatton and the Lockyer Valley contained little rain as the heat left the atmosphere when the sun set, Mr Bufalino said.
Twenty-five millimetres of rain was recorded at Oxley but there were few other significant falls on Monday.
"We've had thunderstorms that have pushed through the western parts of Brisbane already," Mr Bufalino said.
"So that normally absorbs most of the (heat) energy that is available," he said.
"Generally there is not enough instability to build new thunderstorms."
Storms were also moving through the Gold Coast Hinterland until about 8pm on Monday.
There was a 70 per cent chance of storms and wet weather in south-east Queensland for the remainder of the week, according to the Bureau of Meteorology.
