A SEVERE weather warning for heavy rainfall has been issued for the Gladstone region, with areas further south to cop it on Tuesday.
The Bureau of Meteorology said a slow moving surface trough was situated near the Queensland coast, with a low expected to develop along the trough off the Herbert and Lower Burdekin coast today.
This will move in a south to south-east direction parallel to the before deepening further off the south-east Queensland coast on Tuesday.
At 10am, the bureau said the heaviest rain was located on radar over the Capricornia coast near and south of Yeppoon, and near the Wide Bay and southern coast from Hervey Bay to Caboolture.
A flood warning also has been issued, with fast river and creek rises likely in the areas of heaviest rainfall.
Catchments that may be affected include the Calliope, Boyne, Baffle, Kolan, Burrum-Cherwell, Mary, Noosa, Maroochy, Mooloolah and Gold Coast catchments.
Hervey Bay has recorded 25mm of rain in the hour to 9.40am this morning.
In the 24 hours to 9am Monday, Upper Bee (near Mackay) recorded 155mm, Lucinda 104mm and Mackay 102mm, and Hervey Bay and areas on the Sunshine Coast generally recorded 60 to 70mm.
These conditions are expected to contract south to coastal and adjacent inland areas from Burnett Heads to the New South Wales border overnight.
The heaviest rainfalls should then gradually focus offshore of the southern coast during Tuesday.
Heavy rain, which may lead to flash flooding, is expected to develop in coastal and inland areas between Bowen and Brisbane today and into Tuesday.
The bureau said 24-hour totals of up to 100 to 200mm are likely, with isolated totals in excess of 200mm possible.
Locations which may be affected include Gladstone, Brisbane, Maroochydore, Gympie, Bundaberg, Mackay, Proserpine and Bowen.
In the 24 hours until 7.30am Monday, the bureau was reporting the following rainfall:
Sarina, near Mackay: 68mm
Tiaro, near Gympie, 40mm
Emergency Management Queensland advises that people should:
* Avoid driving, walking or riding through flood waters.
* Keep clear of creeks and storm drains.
* For emergency assistance contact the SES on 132 500.
The next warning is due to be issued by 9:55 am.