Sydney suburbs to go underwater as city's largest dam threatens to spill TONIGHT

Sydney suburbs to go underwater as city's largest dam threatens to spill TONIGHT
Sydney suburbs to go underwater as city's largest dam threatens to spill TONIGHT

The rain bomb passing over Sydney has filled the city's largest dam almost to capacity, potentially causing it to spill as early as this evening.

Residents living downstream in suburbs such as Richmond and Windsor are being urged to remain vigilant in case water spilling from Warragamba Dam causes the Hawkesbury-Nepean river system to break its banks.

Warragamba, which supplies the majority of Sydney's water, is currently at 99.6 per cent capacity. 

There could be 'downstream impacts' from release of excess water, said WaterNSW, the body responsible for the dam. 

The body's modelling suggested a peak rate of as much as 100 gigalitres of water a day could spill by Saturday morning.

The Hawkesbury-Nepean system flooded during the heavy rain event in March earlier this year. The predicted rate of spill would be significantly less than the march event, WaterNSW said.

Warragamba, which supplies the majority of Sydney's water, is currently at 99.6 per cent capacity

Warragamba, which supplies the majority of Sydney's water, is currently at 99.6 per cent capacity

Severe flood warnings have been issued along the east coast of Australia as a once-in-100 year storm sweeps across the country. 

Torrential rain has lashed most of Australia and added to several days of wet weather in Queensland, NSW, Victoria and South Australia.

The Bureau of Meteorology says the continued downpour has led to one of the wettest Novembers on record with widespread flooding across the country.

Regional NSW has been hit hard with Scone, Inverell and Gunnedah inundated by raging floodwaters.

Conditions are not expected to ease until the weekend with the NSW coast to cop the worst of the storms. 

A driver navigates along a flooded road in Sydney as heavy rain batters the east coast of Australia

A driver navigates along a flooded road in Sydney as heavy rain batters the east coast of Australia

Severe flood warnings have been issued along the east coast of Australia as a once-in-100 year storm sweeps across the country (pictured, Inverell in northern NSW)

Severe flood warnings have been issued along the east coast of Australia as a once-in-100 year storm sweeps across the country (pictured, Inverell in northern NSW)

Torrential rain has lashed most of Australia and added to several days of wet weather in Queensland, NSW, Victoria and South Australia (pictured, Scone in Upper Hunter Shire in NSW)

Torrential rain has lashed most of Australia and added to several days of wet weather in Queensland, NSW, Victoria and South Australia (pictured, Scone in Upper Hunter Shire in NSW)

The wild weather has already led to widespread flooding with drivers warned to keep off the roads and stay home

The wild weather has already led to widespread flooding with drivers warned to keep off the roads and stay home

Flood waters slowly rise at a home in Cassilis, central NSW, leaving residents stranded

Flood waters slowly rise at a home in Cassilis, central NSW, leaving residents stranded

'Unfortunately, this wet weather will continue for the rest of today and into the weekend,' BoM senior meteorologist Jonathan How said.

'We'll see plenty of showers, storms, through eastern Victoria, Canberra, Sydney and Brisbane and the Gold Coast as well.'

Heavy rain battered Sydney on Friday as a low pressure system moved in from the southern and western regions of the state.

The wild weather has already led to widespread flooding with drivers warned to keep off the roads and stay home. 

'Flooded roads and reduced visibility in heavy rain will make driving conditions dangerous during Friday in all suburbs,' a Bureau of Meteorology alert stated.

A severe thunderstorm warning for damaging winds and heavy rain has been issued for the Blue Mountains, Hawkesbury, Maitland, Cessnock, Greater Newcastle, Gosford and Wyong areas. 

Up to 45mm of rain is forecast for Sydney, along with hazardous surf conditions.

The Sydney suburb of Canterbury copped a 30.2mm soaking in just one hour on Thursday night, as backyards transformed into lakes.

Sydney Airport was inundated with 24.2mm in less than a hour while Richmond in the city's north-west received 26.6mm in three hours, Weatherzone reported.  

Sydney's Warragamba

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