A flood watch has been issued for the Mid North Coast as the drenching rains that lashed Sydney move toward the Queensland border, the Bureau of Meteorology says.
But crucially the BOM says only showers and possible storms are forecast for the Northern Rivers region, which had the most devastating floods in its history only a few months ago.
For the Mid North Coast, the Hunter and parts of the Northern Tablelands the rain will add to flooding already being experienced.
Rains over Sydney have eased but roads remain cut off, debris floating in floodwaters and businesses completely submerged.
River levels have continued to rise, with the Hawkesbury River at North Richmond reaching more than 14 metres.
Major flooding is still occurring at North Richmond, Windsor, Sackville, Lower Portland and Wiseman's Ferry, with more rain expected early Wednesday morning.
About 50,000 people have been given evacuation orders or warnings across NSW, and several major flood alerts are in place.
The bureau said parts of the state received more than 700mm of rain over four days.
Federal Emergency Management Minister Murray Watt said NSW was not out of danger yet, as a natural disaster was declared.
"The message is hopefully the worst has passed but no one knows that for sure," Senator Watt told reporters.
Prime Minister Anthony Albanese and NSW Premier Dominic Perrottet will on Wednesday visit deluged parts of southern and western Sydney that have suffered four floods in the past 18 months.
Australian Associated Press
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