NSW, Sydney Weather: Storm threat, record-breaking rain forecast

NSW residents are being warned that the threat of flooding is “far from over” with torrential rain still on the way for already affected areas.

“Major flooding is still occurring along more than half a dozen rivers in NSW, with the flood threat still increasing in Victoria,” Sky News meteorologist Alison Osbourne said.

The Bureau of Meteorology has also warned that “renewed flooding” is possible for parts of the NSW Central west from Friday.

“A trough approaching from the west of New South Wales is expected to bring rain and thunderstorms to the central and southern inland of the state during Thursday and Friday as it crosses the state,” BOM said in a statement.

The rain is set to return late on Wednesday night and continue into Friday.

“We can see a developing low-pressure system in the Bight with some troughs and a cold front ahead of it,” Ms Osbourne said.

“We will start to see the wet weather increasing on Wednesday morning in places like central and western NSW as well as central parts of Victoria.”

Despite conditions easing on Tuesday, there are 101 flood warnings in place in NSW, including three emergency warnings.

Flooding is also affecting parts of Victoria along the Murray River, with 56 warnings in place for the state.

Confronting images captured northwest of Sydney show the devastating effects the state’s torrid weather continues to reap on the public.

Overhead shots from 9 News of the Hawkesbury region on Tuesday morning show one home has collapsed as the floodwaters encroach onto people’s properties and the surrounding land.

A minor flood warning has been issued for the Hawkesbury River after water levels peaked at 8.09m early on Monday warning.

But even this brief reprieve from the dangerous weather will not last, with another major rain event set to hit from Wednesday.

While conditions eased on Monday and Tuesday following last week’s torrential assault, the worst is yet to come for some areas.

It is unwelcome news for flooded regions of NSW as well as Tasmania, Victoria, the ACT and southern Queensland.

Bureau of Meteorology senior meteorologist Dean Narramore said the rain band would be “just as bad” as last week’s weather.

“Unfortunately, we have another rain system on the way across much of southeastern Australia,” he said.

“As we move into Wednesday, we’ll start to see this next weather system move in and that’s going to tap into some tropical moisture coming in from the Indian Ocean and then eventually down from the Coral Sea, bringing widespread rain and thunderstorm activity to South Australia and then Victoria, NSW and Tasmania on Wednesday and into Thursday.”

Sky News meteorologist Alison Osborne said while there would be “barely any wet weather” on Tuesday following the weekend’s “monster system”, the incoming rain band meant Australians were “not out of the woods yet”.

“It will intensify over the southeast into Wednesday in very muggy conditions,” she said.

“We’ve got northerly winds focusing the heaviest falls from this rain band over western NSW and then into northern Victoria and northern Tasmania.

“The band of showers and thunderstorms will lead to localised heavy falls. There is the risk of flash flooding and it is falling over parts which are already under flood warnings.”

While the system will hit those major NSW flood-affected areas from Friday, Mr Narramore said “thankfully” it would move through quickly with only light to moderate falls.

But the rain has been forecast to bring widespread falls of 50 to 100mm, with isolated falls of up to 200mm possible in parts of central and eastern Victoria and northern Tasmania.

Parts of NSW and Queensland could also be hit by severe thunderstorms.

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