Big wet spreads to northern NSW

The big inundation that has brought flash flooding to South-East Queensland and good falls to the State's west, has now spread into northern NSW.

A severe weather warning for flash flooding has been issued by the Bureau of Meteorology for the NSW Northern Rivers, Mid North Coast and Northern Tablelands.

The rain has come from a low pressure trough just to the north of Brisbane, which has generated some heavy rainfall this morning.

Since 9am the north coast agricultural areas have received good falls, with Casino recording 15mm and Lismore 17mm, while further west Moree has received 20mm, Mungindi 18mm and Collarenabri 19mm.

According to the Bureau the low will drift southwards and increasingly affect the north east of NSW on Tuesday, with areas of heavy rain expected.

A further southwards movement on Wednesday will see the band of heavy rain ease from the north and shift into central parts with further heavy falls, though there might be a slight overall easing trend.

Whilst the rain will be heaviest along the coast, the Bureau says some locally good rains are likely to extend westwards onto the ranges and adjacent slopes, with lighter falls further west.

The cloud feature approaching the Bight represents another upper level feature that is likely to reinforce the weather pattern later in the week maintaining the rainfall potential, at least over eastern parts, through into the weekend.