Weekly Rainfall Update

For the week to 30 November 2021, rainfall was recorded in most of the eastern two-thirds of the Australian mainland, as well as the Kimberley in Western Australia.

At the start of the week, a cold front moved across South Australia and the southern Northern Territory. A trough was located across northern and eastern Australia. A secondary trough formed along inland northern Queensland, while a large high pressure system in the Tasman Sea directed a moist onshore airstream over eastern states. Thunderstorms and showers saw moderate falls recorded in the north Kimberley in Western Australia, across much of the Northern Territory, South Australia, and eastern mainland.

During the middle part of the week, a low pressure system developed in the north-western New South Wales. The low and associated cold front and trough moved slowly across New South Wales and southern Queensland. Widespread moderate rainfall was recordedacross most of New South Wales, much of Victoria, central and eastern Queensland. Locally heavy daily falls of 70 mm to 150 mm were recorded in the Hunter region in New South Wales and the north-east of Victoria. Thunderstorms with showers continued in the north-west Northern Territory and the Kimberley in Western Australia.

In the last part of the week, a surface trough, combined with an upper level trough, and assisted by an onshore flow, produced thunderstorms and showers across the eastern half of Queensland and north-east New South Wales. Daily falls of 100 mm to 230 mm were recorded in the Central Coast and Central Highlands districts in Queensland.

Rainfall totals in excess of 100 mm were recorded in areas in central and along the east coast of Queensland, small areas in the far north-east, central and south-east of New South Wales, and a small area in the north-west of the Northern Territory. The highest rainfall for the week was 351.4 mm at Farleigh Co-Op Sugar Mill in the Central Coast in Queensland.

Rainfall totals between 50 mm and 100 mm were recorded in the north Kimberley in Western Australia; areas in the north-western and eastern Northern Territory; north-eastern South Australia; central and eastern Queensland; central and eastern New South Wales, and north-eastern Victoria.

Rainfall totals of 10 mm to 50 mm were recorded across most of the eastern two-thirds of the mainland, extending to the Kimberley in Western Australia. Areas in the north of Tasmania recorded similar weekly rainfall totals.

Impact of recent rainfall on deficits

Rainfall deficits over Australia for the 19-month (April 2020–October 2021) period are discussed in the Drought Statement, which issued on 5 November 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 30 November 2021.

Rainfall for the period 1 April 2020 to 30 November 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, and in a pocket of the west of the state near Boulia.

Some isolated areas of deficiencies persist in central regions of Western Australia that missed out on above average winter rain that fell further to the south.

Widespread moderate rainfall in the last week eased rainfall deficiencies significantly for the affected areas in Queensland.

Areas around Boulia have generally received 70% and 90% of their average for the period, and small areas in Queensland's Capricornia, and Wide Bay and Burnett districts have generally received between 70% and 90% of their average for the period. Affected areas of Western Australia have generally received between 50% and 70% of their average.

Map of rainfall totals for this week

Product code: IDCKGRWAR0

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