The storms affected the Gold Coast of Queensland around Brisbane as well. By mid-Saturday, the danger of flooding was starting to ease there, the Australian Broadcasting Corp. reported.
A foot or more of rain fell in some areas in three hours, sending rivers over their banks.
Officials said a disaster declaration was expected.
In the town of Murwillumbah, people were evacuated from cars trapped on a low bridge, Sky News reported.
Swim Week Miami Beach 2014 [PHOTOS]