Weekly rainfall wrap + 14 day outlook, 11 Oct 2017

James Nason, October 11, 2017


For today’s 14-day rainfall outlook – scroll to bottom of article

Surface troughs generated thunderstorms and showers, with moderate falls across northwest, central and eastern Australia. A low pressure system produced moderate falls in western Tasmania and southern Victoria.

Past seven days: At the start of the week, showers and thunderstorms lingered in southeast Queensland as a surface trough and cloudband moved away from the eastern seaboard into the Tasman Sea.

An upper-level disturbance connected to a low pressure system in the Bight, and generated a cloudband that extended from Western Australia into South Australia. Showers and thunderstorm activity produced moderate falls in the southern interior of Western Australia and parts of central Australia, and light falls across parts of South Australia. Around the same time, isolated thunderstorms formed along a surface trough located across northern Australia, with moderate falls about the Darwin–Daly District in the Northern Territory.

By the middle of the week, a low pressure system approached Tasmania from the Bight, then tracked eastwards across the State, while the associated cloudband and surface trough moved through the Victoria. Moderate falls were recorded in western Tasmania and southeastern Victoria

In the last part of the week, a broad area of low pressure and an upper level disturbance resulted in shower and thunderstorm activity over the north of Western Australia, southern and western parts of the Northern Territory, southeastern South Australia, New South Wales and Victoria. A surface trough over southeastern Queensland generated mid-level cloud with embedded thunderstorms, and moderate falls about southern and southeastern Queensland and northeastern New South Wales.

A cold front crossed Victoria and New South Wales rapidly at the end of the week, with moderate falls recorded across much of New South Wales and eastern Victoria.

Rainfall totals exceeding 50 mm were recorded in isolated spots in the Kimberley of Western Australia, pockets of southeastern and central Queensland, far southwestern Tasmania, and northeastern New South Wales. The highest weekly total was 79 mm at Lady Elliott Island in central Queensland.

Rainfall totals between 10 mm and 50 mm were recorded in northern, the central interior and southern coasts of Western Australia; western parts of the Northern Territory including the Darwin–Daly district; the agricultural districts and southern coast of South Australia; eastern Victoria, and in the north and west of Tasmania. Similar totals were recorded in northern and central New South Wales, and parts of western, southern and southeastern Queensland.

Little or no rainfall was recorded in Pilbara, Gascoyne and along the west coast of Western Australia; the eastern half of the Northern Territory; northern Queensland, parts of southwestern New South Wales, western Victoria and patches of the north of South Australia.

Highest weekly totals

New South Wales and Australian Capital Territory

74 mm Glen Innes Airport AWS

73 mm Kalang

64 mm Kingstown Post Office


55 mm Mount Baw Baw

42 mm Ovens River at Eurobin

39 mm Falls Creek (Rocky Valley)


79 mm Lady Elliot Island

68 mm Landsborough

67 mm Samuel Hill Aero

Western Australia

70 mm Larrawa Airfield

61 mm Ruby Plains

47 mm Theda

South Australia

24 mm Penong

17 mm Streaky Bay

Tarcoola (Commonwealth Hill)

Ceduna AMO


78 mm Mount Read

48 mm Hartz Mountain (Keoghs Pimple)

45 mm Cape Bruny Lighthouse

Scotts Peak Dam

Northern Territory

52 mm Labelle Downs

50 mm Humpty Doo Collard Road

40 mm Yulara Airport

More weekly rainfall totals:

Source: BOM





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