Australia news live: almost 50,000 people isolated after one-in-500-year floods in NSW; Sydney rail commuters warned of continued delays

Conditions are expected to persist into the rest of the day, with 150 to 200mm of rainfall predicted in the mid-north coast. Follow today's news live

• Get our breaking news email, free app or daily news podcast

People trapped by flooding as river rise breaks record

Intense falls and major flooding have hit Australia's most populous state as a slow-moving system dumps rain, causing a major river to rise to the highest level in almost 100 years.