The weather system that dumped hundreds of millimetres of flooding rain on the Hunter and Mid North Coast has hit Sydney overnight.Steady rain developed late on Thursday and built through the night with the biggest falls recorded in the city's west.

Major roads were closed, inbound and outbound flights cancelled, trains halted by flooding and dams close to overflowing as Sydney was smashed by torrential rain on Friday morning.

The wild weather and heavy rains also flooded rail tracks, forcing drenched commuters onto replacement buses once again this week.

AT LEAST four people died and thousands are without power as severe storms lashed Australia’s most populous state. Read more at The Business Times.

Extreme weather conditions are lashing the NSW north coast, with 50,000 currently isolated due to floods, one person confirmed dead and three others currently missing.

Rain is set to continue over the weekend and into next week in Sydney, with the Bureau of Meteorology issuing weather warnings for the East Coast.

More than six million people are being warned of delays, blocked roads and flash flooding as Sydney and surrounds are impacted by heavy rain.

Some of Australia's most iconic venues were lit up on Friday night for the annual Vivid festival in Sydney. The threat of wet weather didn't dampen spirits — more than 3 million people are expected to hit the streets during the 23-day event.

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.

The catastrophic wet weather, which has claimed four lives and left 50,000 people isolated, is now pummelling Sydney, triggering train delays and cancelled flights across the city.As the devastating floods start to ease along the Mid North Coast,