The weather system has the potential to bring six-hourly rainfall totals between 60 to 100mm of rain from tomorrow evening for parts of the southern Illawarra, northern South Coast and eastern Southern Tablelands.

According to the Bureau of Meteorology, parts of the coast could see 24-hour totals up to 140mm.

A severe thunderstorm warning is also in place for parts of the NSW Riverina, lower western, upper western and central west slopes and plains forecast districts.

Bureau of Meteorology senior meteorologist Miriam Bradbury said residents on the coast were likely to see damaging wind gusts and waves as the weather system hovered over the coast.

“It will linger there and draw in moisture and strong winds, directing them against the coast and potentially leading to further severe weather for areas between the Hunter and the South Coast,” she said

Over the next two days, the wet weather will also increase for northern Victoria and southern Queensland as the rainband and low-pressure system start to bind and produce widespread rain and thunderstorms.

“We will see moderate rainfall totals for some of these areas, especially for much of eastern and south-eastern NSW but also north-eastern Victoria and severe thunderstorms are possible again with the risk of damaging winds and heavy rain,” senior meteorologist Jonathan How said.

“On Wednesday, Sydney and Canberra will see a wet, cold and rainy day while Melbourne and Adelaide will also see showers.