Yep it's common for them to show up on radar but mainly for dense smoke plumes that also contain ash, etc from large intense fires.

Re the smoke, the low level winds range from S to SE'lies near the surface (behind the coastal change) to S to SSW'lies a little bit above the surface so that could start blowing the lower level sections of the current smoke plumes up towards SE QLD especially southern and eastern parts on Saturday.
Meanwhile mid and upper level winds have a more SW to W'ly component so they may continue to blow the upper portions of the plumes out to sea.

As for the dust, I wouldn't be too surprised if some of it from the dust storms currently sweeping across inland NSW makes it here in the form of dust haze overnight or on Saturday, and adds to any smoke that pushes up here from NSW as well as some of the fires in SE QLD.

EC and ACCESS-C is still persisting with the idea of very isolated shower or storm activity for southern coastal parts of SE QLD and the Northern Rivers for Saturday but still useless as decent rain producers and may produce some dry lightning.

And very slim pickings as far as any decent rainfall goes Pabloako. Might have to wait til after mid November or even beyond for any half decent rainfall.