Flash flooding on Australia's southeast coast has killed three people and cut off towns, isolating tens of thousands of residents, as officials on Thursday warned more downpours were expected over the next 24 hours.

Record rainfall on Australia's east coast has led to catastrophic flooding, with three dead and one missing. Over 500 people have been rescued, and more rain is expected. Regions like New South Wales have been severely impacted,

Rising floodwaters stranded more than 50,000 people in eastern Australia on Thursday, as torrential rain pummelled water-logged towns for a second day and engorged rivers swallowed roads, leaving two dead.