A flash flood warning has been issued for the Queensland coast, from Rockhampton to the New South Wales border.
The Bureau of Meteorology issued a severe weather warning for Tuesday, predicting that 150mm of rain could fall in some areas in a 24-hour period.
It warned that Gladstone, Bundaberg, Hervey Bay, Maryborough, Gympie and the Sunshine Coast may experience localised flash floods.
A surface trough off the Capricorn coast is producing the heavy rainfall.
It is expected to intensify and move south along the Wide Bay and southeast Queensland coasts on Tuesday. Source