A LOW-PRESSURE system developed off the south-eastern Queensland coast, with onshore flow bringing locally intense rainfall to coastal areas, much of it falling in 3 hours on the evening of September 22.

Weekly totals of 50-100 millimetres were recorded over the New South Wales Northern Rivers District and parts of south-eastern Queensland, with higher totals locally in parts of the Mid North Coast and the Gold Coast.

Weekly totals of 25-50 mm were recorded for much of inland NSW, southern Queensland, the Mallee and Gippsland districts in Victoria, and the Riverland and Murraylands in South Australia.

Weekly totals of 10-25mm were recorded along the south coast of Western Australia, Agricultural Districts in South Australia, eastern Tasmania and the far west of Queensland.

The rain across inland NSW saw river levels rise along many already flooded rivers, with major flooding recorded along the Narran, Namoi, Macquarie, Lachlan, Narran, Bogan, Gwydir and Culgoa rivers.

The highest weekly total at a Bureau gauge was 392mm at Meldrum (Coolawarrah) on the NSW Mid North Coast, and the highest daily total was 285mm at Springbrook Road, Qld, in the 24 hours to 9am on September 23.