Forecast issued at 4:31 am EST on Thursday 1 September 2016.
A high pressure system over the Tasman Sea will move slowly east during the next few days, extending a weakening ridge into eastern Queensland. Moisture levels are increasing across the state as winds tend more onshore about the eastern Queensland coast. An upper and surface trough system will approach southwestern Queensland today and move east across the interior of the state on Friday, clearing the southern coast on Saturday.
Forecast for the rest of Thursday
The slight to moderate chance of showers and drizzle areas over eastern districts, mainly about the east coast and ranges north of Rockhampton. A high to very high chance of rain and possible isolated thunderstorms developing southwest of about Urandangi to St George, with some moderate to heavy rainfall likely. Patchy light rain will extend further east into the southern interior during the day. The far northwest of the state and much of the northern and central interior will remain fine. Mostly moderate southeast to northeasterly winds.
Friday 2 September
The upper trough and associated surface trough should move east over the southern half of the state with rain areas and possible thunderstorms reaching areas to the southwest of about Mt Isa to Emerald to Stanthorpe by the late evening. Some moderate to heavy rainfall amounts are likely, particularly in the south. Showers will also develop over much of the remaining interior during the day, while shower and drizzle activity will likely persist along much of the east coast and adjacent inland in the moist northeasterly wind flow.
Saturday 3 September
The upper trough and associated surface trough should clear eastwards into the Coral Sea during the day, with the band of cloud and rain areas also contracting offshore out of areas east of about Emerald and south of about Mackay during the day. The slight to moderate chance of a shower along the east coast otherwise.
Sunday 4 September
A high moving east over southern Australia will extend a ridge into southern Queensland with fine and sunny conditions over much of the state. Cooler conditions will also return to much of the state in the wake of the surface trough. Isolated showers will be possible along the east coast, but mainly in the far north.
Monday until Wednesday
A high moving east over southeastern Australia will extend a ridge and fine and sunny conditions into much of the state. Early frosts are possible over the southeast interior. Some shower activity will likely persist about parts of the east coast during the outlook period.
The next routine forecast will be issued at 4:30 pm EST Thursday.