A BROAD trough of low pressure that formed over the Northern Territory and South Australia early in the week and moved eastward brought thunderstorms and light showers to Central Australia, the north-east of South Australia and southern Queensland.
A cold front that moved across the south-east of the continent brought moderate falls to much of Tasmania, and light falls to southern Victoria.
Later in the week, another inland trough brought widespread falls to central and southern parts of the Northern Territory, South Australia, the west and south of Queensland, and New South Wales.
Past seven days: For the week to 12 October 2021, rainfall was recorded in the far south-west and along the south coast in Western Australia; north-eastern parts of South Australia; around West and South Gippsland and the South West coast in Victoria; the north-eastern quarter, the central coast and pockets of north-west New South Wales; and most of Tasmania. Rainfall was also recorded in the west, inland south, and south-east of Queensland, and small areas scattered across the Northern Territory.
In the first part of the week, a broad trough of low pressure over the Northern Territory and South Australia moved east and generated thunderstorms and light showers in Central Australia, the north-east of South Australia and southern Queensland.
In the west, a cold front brushed the south coast of Western Australia and brought light rainfall to the state’s far south-west.
In the south-east, a cold front moved across the region and produced moderate rainfall in western and northern Tasmania, and mainly light falls in southern Victoria. A number of weak cold fronts soon passed Tasmania and produced light to moderate falls in western parts of that state.
In the last part of the week, an inland trough extended from the north-west to central and south-east Australia. The trough and associated cloudband generated widespread thunderstorms and showers in central and southern parts of the Northern Territory, South Australia, the west and south of Queensland, and New South Wales. In the far south-east of Australia, a pair of cold fronts produced light to moderate rainfall in the south and east of Victoria, and much of Tasmania. The trough moved slowly east with a cold front stalling in the north-east of New South Wales before moving offshore at the end of the week. Light to moderate rainfall was recorded in central and southern parts of the Northern Territory, western, central and southern Queensland, northern and eastern New South Wales, and along Victoria’s coast. Daily falls over 40 mm were reported in north-east New South Wales and south-east Queensland.
At the end of the week, a cold front moved across south-west Western Australia, with moderate falls recorded along the coast. Isolated thunderstorms produced light to moderate rainfall in the Top End of the Northern Territory.
Weekly rainfall totals in excess of 100 mm were recorded in pockets of western Tasmania, and the highest weekly rainfall total was 150 mm at Mount Read.
Weekly rainfall totals in excess of 50 mm were recorded in the Northwest Coast and Western districts in Tasmania, and north-eastern New South Wales.
Rainfall totals between 10 mm and 50 mm were recorded in the far south-west and along the south coast of Western Australia; in north-eastern South Australia; South and West Gippsland and surrounding regions, and the South West coast in Victoria; pockets in the north-west, the north-eastern quarter and the central coast in New South Wales; and most of Tasmania. Similar totals were recorded in the west, inland south and south-east of Queensland, and small areas scattered in the Northern Territory.
Highest weekly totals list and map
New South Wales and Australian Capital Territory
71 mm Yarras (Mount Seaview)
69 mm Nundle (Malonga), Mooral Creek (The Den)
40 mm Balook
38 mm Mount Best (Upper Toora)
32 mm Mount Baw Baw
54 mm Greenbank (Defence)
48 mm Capalaba Water Treat
46 mm Regents Park, Kalbar State School
44 mm Kimberley
35 mm Denmark, King River, Walpole Forestry
22 mm Gumeracha
19 mm Blinman
14 mm Multiple locations
150 mm Mount Read
144 mm Lake Margaret Dam
120 mm Lake Margaret Power Station
56 mm Bulman
42 mm Wongalara
22 mm Territory Grape Farm