Millions of Sydneysiders have been warned to unplug all their appliances and computers and stay off the phone as a massive storm sweeps through dumping torrential rain and sparking flash flooding.
A severe weather warning remains in place for Sydney and surrounding NSW regions after a day of widespread chaos, flash flooding, closed roads and thousands of evacuations.
BOM has warned that a new low will bring storms and intense rainfall on Tuesday, prompting concerns of flash flooding in multiple areas along the coast and in greater Sydney.