More miserable weather is on the way for parts of the NSW coast, as a low pressure trough moving across the state brings storms and heavy rain.

NSW has been lashed by wet and windy conditions all week, with Sydney and the Central Coast on Monday copping a downpour that caused flash flooding and a landslide, and Tamworth on Thursday being pelted with tennis ball-sized hail.

Another low pressure system was forecast to hit southwest NSW on Thursday afternoon, with the trough expected to deepen on Friday.

That low will head east during Saturday, bringing showers to many areas, according to the Bureau of Meteorology.

“We could see some heavy falls, particularly on the central and southern coast of NSW, as that low moves out to the Tasman Sea,” bureau meteorologist Dean Narramore said on Thursday.

Falls of up to 100mm are expected along the coast, before conditions ease later on Sunday.

The NSW State Emergency Service is warning residents not to drive, walk or ride through floodwater, and to avoid driving at all if the weather becomes extreme.


“Floodwater can wash out roads that once lay underneath and just 15cm of water can start to float a small car,” an SES spokesman told