Adelaide is undergoing intense rainfall and thunderstorms. Forecasts predict up to 25mm of rainfall. The south-east region is at risk of a significant flood threat following the second-driest September on document. Intense rainfall and thunderstorms are sweeping across Australia. The recent weather situation are a result of the second-driest September on document, which has made the region susceptible to major flooding. Authorities are advising residents to prepare for possible flooding as the conditions develop.