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Wild weather has caused flash flooding and damaged a number of homes in Sydney and parts of the New South Wales Central Coast region this morning.
A severe weather warning has been issued by the weather bureau and heavy rain has been falling across the city.
David Webber from the State Emergency Services (SES) says it has received around 100 calls for help from people in Sydney this morning.
"Most of those calls have been for trees down and water getting into properties," he said.
Flash flooding has closed a number of roads across the city.
Adam Berry from the Road Transport Authority (RTA) says motorists need to be careful if they are driving on roads affected by flooding.
"People really shouldn't take the chance trying to get through a road that might be flood-affected or covered by water, [it is] potentially dangerous [and can cause] potential damage to their car."
Heavy rain has also been falling in the Illawarra, the Hunter and on the Central Coast.
The SES has sandbagged low lying areas at Shoalhaven Heads on the lower reaches of the Shoalhaven River.
Nowra has recorded 160 millimetres of rain over the past two days.
SES duty officer Paul Marr says crews will continue to monitor the Shoalhaven River closely.
"Downstream on the Shoalhaven in a couple of lying areas at Shoalhaven Heads there's water entry basically from urban flooding, suburban flooding, it's not a river problem at this stage," he said.
- RADIO AUSTRALIA