Rain to head to southwest Qld

Heavy rain that drenched parts of drought-stricken northwest Queensland is expected to move to southern parts of the state.

The slow-moving rain-band provided much-needed relief to areas including Mt Isa, Cloncurry and Winton earlier this week.

It is expected to track down the Queensland/Northern Territory border on Thursday and Friday before heading east towards Longreach on the weekend, the Bureau of Meteorology says.

However, exact rainfall amounts are hard to predict.

"In the southwest we're expecting 50-60mm right near the western border, which is a bit unusual for out there," BOM forecaster David Bernard told AAP.

"There is an outside chance of 100mm today and tomorrow."

Storms are forecast for Mt Isa, Cloncurry, Burketown and Normanton on Wednesday.

A moderate flood alert remains in place for catchment areas in the state's Gulf Country, including the Flinders and Nicholson Rivers.

The Barcoo River, near Blackall, is experiencing minor flooding, with a further river level rise expected.

Strong wind warnings are also in place for Gulf regions, Mackay and Townsville coasts, as well as Fraser Island, Sunshine Coast, Moreton Bay and Gold Coast.