Weekly Rainfall Update
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.
Impact of recent rainfall on deficits
Rainfall deficits over Australia for the 18-month (April 2020–September 2021) period are discussed in the Drought Statement, which issued on 6 October 2021.
Rainfall deficit maps are available for the period as well as for standard periods. The maps to the right shows the percentage of mean rainfall that has been received for the period starting April 2020, and extended to the week ending 12 October 2021.
Rainfall for the period 1 April 2020 to 12 October 2021
Serious or severe rainfall deficiencies for the period commencing April 2020 persist in the Capricornia, and Wide Bay and Burnett districts and extend west into the Central Highlands District in Queensland.
Rainfall in the past week slightly eased rainfall deficiencies around Boulia, with rainfall now between 50% and 70% of average for the period. Affected areas in Queensland's Capricornia, and Wide Bay and Burnett districts have generally received between 60% and 80% of their average for the period.
Product code: IDCKGRWAR0