A Flood Watch remains in place from Bundaberg to the New South Wales Border according to the Bureau Of Meteorology.
There is also a Minor Flood Warning for the Mary River in the Gympie region due to heavy rain overnight.
The Bureau of Meteorology's Shane Kennedy said water levels are still rising there.
A Hazardous Surf Warning has been issued for waters off Fraser Island due to the presence of Cyclone Uesi, which is a Category Two system.
Mr Kennedy said we may see some beaches closed as Cyclone Uesi moves closer, causing some beach erosion.
There have been 324 calls for help made to the Sunshine Coast State Emergency Service overnight, with the rain continuing to fall in parts on Thursday.
Around 50 people had to be evacuated, some of those from a Nursing Home at Mt Coolum where there was flash flooding. There were several swiftwater rescues carried out also.
Emergency Management Services Units are responding to a swiftwater rescue at Herron and Maleny-Kenilworth Road at Conondale. This incident is ongoing.
In terms of the amount of rainfall we have seen on the Sunshine Coast, Mr Kennedy said 232mm of rain landed at the Sunshine Coast Airport, more than 200mm was also recorded at Coolum and Nambour over a two hour period.
He explained that the thunderstorms we are seeing are slow moving, generating intense rainfall and sparking flash flooding.
The risk of heavy falls should decrease during the day on Thursday. There is a risk we could see more heavy falls over the next couple of days though. An upper trough over southeastern Queensland is causing those heavy falls.
Further north between Townsville and Cairns, residents there are being warned to brace for heatwave conditions.
Mr Kennedy said maximum temperatures will be around five to eight degrees above average there for coastal communities and minimums will be three to four degrees above average. That means there will be little reprieve for residents seeking relief from the heat.
By Michelle Brewer