No reprieve as Sydney area to cop another 100mm on Tuesday

The Sydney area and parts of NSW are set for another drenching on Tuesday with at least 100 millimetres of rain expected fall in the next 24 hours stretching from Newcastle to southern Sydney.

Severe weather warnings are still in place for the central NSW coast with heavy rainfall and damaging winds expected in areas including Gosford, Cessnock, Maitland, Sydney, Dungog and Kulnura.

Overnight, the Bureau of Meteorology reported 235mm of rain in the Darkes Forest area south of Sydney, while Camden, in Sydney's far southwest, has received 197.4 mm for the month to date.

Sydney's Observatory Hill weather station amassed 148.6 mm of rain over the span of four days, bringing the city's annual total to almost 1700mm.

The relentless rains of the past week add to Sydney's wettest year on record, says Weather Zone.

Between Friday and Monday, Sydney copped a total 733 mm of rain, that's considerably more than London's average annual amount of 615 mm, BBC reported.

Parts of NSW on high flood alert

With significant rainfall totals over the past three days, some areas are expected to approach or exceed flood levels seen in recent weather events, including March 2021, and March and April of this year.

Flood warnings are still in place for the Hawkesbury and Nepean rivers, with the BOM reporting major flooding currently occurring at Windsor.

Both Windsor and Camden residents are enduring their fourth flood this year already.

Speaking to Michael Rowland on ABC Breakfast, a Windsor resident said it's "devastating" to see her house underwater again.

"We only just got back to normal [after the last floods], I just feel numb," she said.

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Meanwhile, the Hawkesbury River at North Richmond may remain around 14m until late Tuesday morning, with major flooding expected.

"Hawkesbury River peaking now at 14 metres at Windsor," Nine News reporter Annalise Bolt tweeted at 8am on Tuesday.

"The bridge is completely underwater. It reached 13.8 in March this year."

Scores of evacuation orders and warnings have been declared, mostly northwest of Sydney, where major flooding is occurring along the Hawkesbury and Nepean rivers at Menangle, North Richmond, Lower Portland and Windsor.

Residents in parts of Chipping Norton in Sydney's southwest were directed to evacuate before midnight, with flood warnings for the Georges and Woronora rivers.

Assistance for flood-affected areas

Minister for Emergency Management, Senator Murray Watt, said the federal and New South Wales governments were working together to ensure affected areas get financial and other assistance as soon as possible.

"We have seen some of these impacted communities being hit by floods for a third and fourth time in 18 months, which is extremely distressing to the residents," Senator Watt said.

The NSW Minister for Emergency Services Steph Cooke, said significant recovery support would be required to help communities once the major weather event passes.

"While we are still very much in the emergency response phase of this developing weather event, as waters recede we will work with communities to assess longer term recovery needs and ensure appropriate long-term support is provided," Ms Cooke said.

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