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Sydney is bracing for more torrential rain and flash flooding as thousands of residents prepare to flee their homes with evacuation orders in place for several areas.

A severe weather warning is in place with six-hourly totals between 60 and 100mm forecast for the harbour city on Thursday with totals of up to 140mm predicted on the coast.

The wild weather has sparked widespread chaos with dozens of roads closed and Sydneysiders urged to stay home.

Sydney is expected to surpass its average annual rainfall total of 1213mm on Thursday night, just three months into 2022.

Some suburbs could receive up to 250mm, amid fears Warragamba Dam could spill within hours for the second time within weeks.

The  Blue Mountains, Central Coast, Illawarra, South Coast, Hunter, Central Tablelands and Southern Tablelands regions are also in the firing line. 

An urgent warning issued for low lying parts of Woronora and Bonnet Bay in Sydney’s south to get ready to evacuate on Thursday morning.

A severe weather warning has been issued for much of NSW coast. Areas in purple should expect at least 100mm of rain

A severe weather warning has been issued for much of NSW coast. Areas in purple should expect at least 100mm of rain

A severe weather warning has been issued for much of NSW coast. Areas in purple should expect at least 100mm of rain

Some of Sydney could receive up to 250mm of rain on Thursday (pictured, Sydneysiders battling the wild weather on Wednesday)

Some of Sydney could receive up to 250mm of rain on Thursday (pictured, Sydneysiders battling the wild weather on Wednesday)

Some of Sydney could receive up to 250mm of rain on Thursday (pictured, Sydneysiders battling the wild weather on Wednesday)

‘Floodwaters may isolate the area. If you remain in the area, you may be trapped without power, water and other essential services and it may be too dangerous to rescue you,’ an alert read.

‘Residents of areas expecting to be flooded should make plans to leave when advised to do so. Ensure you take pets and valuables with you.’ 

Sydney’s south-west are also on high alert with major flooding expected at Liverpool and Milperra on Thursday afternoon. 

Authorities have urged Sydney motorists to stay off the roads if possible.

‘We have seen widespread heavy rainfall overnight and it is expected to continue today with a high risk of flash flooding throughout the day with lots of roads closed cut off and flooded,’ NSW SES assistant commissioner Dean Storey told Sunrise.

‘The key message for the community, particularly those getting up getting ready to go to work and hit the roads, is avoid unnecessary travel.’

‘If you don’t have to take to the roads today, please avoid it. If you need to travel, drive to the conditions and never drive through those floodwaters. 

‘If you live in a flood-prone area that is forecast to the impacted, have a plan in place and be ready to enact that plan if you are required to evacuate your home.’ 

Commuters are battling a tough a tough run into work from Sydney’s northern beaches with Pittwater Road inundated with water.

Wakehurst Parkway is also closed between Narrabeen and Oxford Falls. 

In the city’s south, the Illawarra Highway at Macquarie Pass is closed due to landslip while flooding has cut Audrey Road in the Royal National Park.

SES crews have responded to almost 600 requests for help in the last 24 hours, including seven flood rescues. 

Sydney’s south copped an battering overnight, where Cronulla has received a 150mm drenching in the last 24 hours. Two thirds fell within three hours overnight.

Sydney Airport recorded 111mm, well above its average monthly rainfall for April. 

Sydneysiders have been urged to stay off the roads. Pictured is flash flooding on Pittwater Road on the northern beaches Thursday morning

Sydneysiders have been urged to stay off the roads. Pictured is flash flooding on Pittwater Road on the northern beaches Thursday morning

Sydneysiders have been urged to stay off the roads. Pictured is flash flooding on Pittwater Road on the northern beaches Thursday morning

Dozens of roads are closed across Sydney, including Audley Weir (pictured Wednesday night)

Dozens of roads are closed across Sydney, including Audley Weir (pictured Wednesday night)

Dozens of roads are closed across Sydney, including Audley Weir (pictured Wednesday night)

Flood warnings are in place for 12 rivers across NSW, including the Hawkesbury, Nepean, Colo and Georges rivers.

Minor warnings have been issued for the Hawkesbury River at Windsor and North Richmond and the Cooks River at Tempe Bridge and the Woronora River at Woronora Bridge.

Moderate flooding could occur on the Colo River at Putty Road.

Little Bay in Sydney’s south-east copped a 107 mm drenching overnight while Darkes Forest on the south-west outskirts received 67mm within two hours. 

On top of the wild weather, an oil spill has sparked havoc at Kurnell in Sydney’s south after a pump at the nearby Caltex Refinery, Australia’s largest fuel import terminal failed. 

BOM has warned of an increased risk of landslides  and debris on the roads caused by heavy rain. 

Central NSW is on high alert, with minor to moderate flooding forecast for the southern coastal Rivers, the Macquarie and Queanbeyan rivers on Thursday and Friday. 

A severe thunderstorm warning has also been issued for the Central West Slopes and Plains and Upper Western regions.

It's been a wet night on Sydney roads with some areas receiving up to 120mm overnight

It's been a wet night on Sydney roads with some areas receiving up to 120mm overnight

It’s been a wet night on Sydney roads with some areas receiving up to 120mm overnight

The weather is caused by a strong upper trough and embedded low amplifying over the centre of NSW, working to deepen another trough sitting off the coast.

The systems are expected to weaken on Friday morning.

‘Heavy and persistent showers over the coming days will increase the chance of flash flooding and landslips over already saturated catchments,’ BOM meteorologist Sarah Scully said on Wednesday.

Severe thunderstorms also pose a threat, including in northeast NSW.

‘They may produce localised heavy falls (but) it is not expected to produce that riverine flooding,’ Ms Scully said.

‘Instead, it’ll be more localised flash flooding. 

Six-hourly rain totals between 60 and 100mm are forecast for Sydney on Thursday

Six-hourly rain totals between 60 and 100mm are forecast for Sydney on Thursday

Six-hourly rain totals between 60 and 100mm are forecast for Sydney on Thursday

FOUR DAY FORECAST FOR WEATHER IN YOUR CITY:

 Perth 

Thursday: Sunny. Min 18 Max 32

Friday: Shower or two developing. Min 20 Max 27

Saturday: Partly cloudy. Min 14 Max 25

Sunday: Partly cloudy. Min 13 Max 23

 

Adelaide 

Thursday: Partly cloudy. Min 13 Max 24

Friday: Mostly sunny. Min 14 Max 26

Saturday: Mostly sunny. Min 15 Max 27

Sunday: Partly cloudy. Min 17 Max 28

 

Melbourne  

Thursday: Partly cloudy. Min 13 Max 24

Friday: Partly cloudy. Min 13 Max 23

Saturday: Partly cloudy. Min 16 Max 26

Sunday: Possible shower. Min 17 Max 26

 

Hobart 

Thursday: Mostly sunny. Min 8 Max 20

Friday: Sunny. Min 9 Max 21

Saturday: Sunny. Min 9. Max 24

Sunday: Shower or two. Min 14 Max 24

 Canberra 

Thursday: Rain. Possible heavy falls. Min 12 Max 17

Friday: Rain. Min 11 Max 18

Saturday: Showers. Min 12 Max 21

Sunday: Partly cloudy. Min 11 Max 22

 

Sydney

 

Thursday: Rain. Possible heavy falls. Min 17 Max 22

Friday: Rain. Min 17 Max 23

Saturday: Showers. Min 18 Max 24

Sunday: Shower or two. Min 17 Max 24

 

Brisbane 

Thursday: Showers increasing. Min 20 Max 28

Friday: Showers. Min 20 Max 26

Saturday: Showers. Min 20 Max 27

Sunday: Shower or two. Min 19 Max 28

 

Darwin 

Thursday: Partly cloudy. Min 26 Max 34

Friday: Partly cloudy. Min 26 Max 34

Saturday: Partly cloudy. Min 26 Max 34

Sunday: Partly cloudy. Min 25 Max 34 

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Source: DailyMail

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