Weekly Rainfall Update

Weekly Rainfall Update
for 7 days to 9 am 26 August 2014

The Weekly Rainfall Update provides a detailed analysis of the rainfall recorded across the country during the past week. The page is updated every Tuesday afternoon, for the seven days ending that day. The update includes a rainfall map, a table of the highest falls recorded for the week by state, some commentary and an analysis of the impact of recent rainfall on parts of Australia experiencing rainfall deficits.

Table of highest weekly totals

State Highest 2nd Highest 3rd Highest
WA Cowaramup
(83 mm)
(South Coast)
Capel North
(75 mm)
(South Coast)
Margaret River
(63 mm)
(South Coast)
NT No rainfall recorded

SA Beachport
(11 mm)
(Lower Southeast)
(9 mm)
(Lower Southeast)
Cape Borda
(5 mm)
(Kangaroo Island)
Qld Noosaville
(182 mm)
(146 mm)
(135 mm)
NSW/ACT Ballina Airport
(148 mm)
(North Coast)
Robertson (The Pie Shop)
(135 mm)
Tweed Heads
(121 mm)
(North Coast)
Vic Wyelangta
(64 mm)
(West Coast)
Beech Forest
(60 mm)
(West Coast)
Haines Junction
(51 mm)
(West Coast)
Tas Gray (Dalmayne Rd)
(55 mm)
(East Coast)
Friendly Beaches
(54 mm)
(East Coast)
Mount Barrow
(49 mm)

State weekly rainfall bulletins (updated daily):

Northern WA | Southern WA | NT | Qld. | NSW/ACT | Vic. | SA | Tas.

The table above lists the highest rainfall totals for each state and territory for the past week. These are based on real-time rainfall reports, and only limited quality control has been performed on the data. Rainfall district names are given in parentheses. Please also note that some station names have been shortened by taking away words such as post office and airport. Map of the Bureau of Meteorology rainfall districts.

In creating the weekly rainfall map, the rainfall recorded at sites across Australia is analysed onto grids and displayed as a map. In data-rich areas, such as southeast Australia, or in regions with strong rainfall gradients, such as across mountain ranges, 'data smoothing' may occur, resulting in gridpoint values differing from the exact rainfall amounts measured at the contributing stations.

Commentary on recent rainfall

For the week ending 26 August 2014, rainfall was recorded in southeast Queensland, eastern New South Wales, eastern and southern Victoria, southwest Western Australia and northern Tasmania.

At the start of the week, a trough and cold front brought moderate falls to southwest Western Australia. Towards the end of the week this system was associated with light to moderate rain across southern Victoria and northern Tasmania as the cold front weakened to a slow-moving surface trough that tracked across southeast Australia.

A complex, slow-moving surface trough located near the coast of southern Queensland brought rainfall to the north coast of New South Wales and southeast Queensland from mid-week. A low pressure system developed on the trough and combined with an upper-level low pressure system, bringing heavier falls along the coast around the Queensland and New  South Wales border as the system deepened.

Rainfall totals over 100 mm were reported on the exposed coast of southeast Queensland and northeast New South Wales. The highest weekly rainfall total of 182 mm was recorded at Noosaville in Queensland.

Rainfall totals between 50 mm and 100 mm were recorded in
isolated areas along the coast of New South Wales, the southeast coastal strip of Queensland and isolated locations in southwest Western Australia.

Rainfall totals between 10 mm and 50 mm were recorded in southwest Western Australia, in the south and east of Victoria, most of northern Tasmania, eastern New South Wales and southeast Queensland.

The Northern Territory and remaining parts of Western Australia, most of South Australia, northwest Victoria, inland New South Wales and Queensland away from the southeast recorded little or no rainfall for the week.

Impact of recent rainfall on deficits

The Drought Statement issued on 7 August, discusses rainfall deficits over Australia for the 8-month (December 2013 to July 2014) and the 22-month (October 2012 to July 2014) period ending 31 July 2014. The rainfall deficit maps are available for the 8-month and 22-month period as well as for standard periods.

The maps below show the percentage of mean rainfall that has been received for the rainfall deficit period for the 8-month and 22-months ending 26 August 2014. Only the areas that experienced serious or severe rainfall deficiencies for the corresponding period ending 31 July 2014 are analysed, the rest of the map is masked in grey shading.

Rainfall to date for 8-month period
Drought Period 1- click on map for larger image

Rainfall to date for 22-month period
Drought Period 2- click on map for larger image

Rainfall for the period December 2013 to 26 August 2014

For the 8-month period commencing December 2013, serious to severe deficiencies (lowest 10% to 5% of records) are in place in large areas of northeastern New South Wales, southeastern Queensland and in isolated pockets of central Queensland, a small area of the central Top End and along the coast of southeastern Tasmania.

Rainfall during the last week has continued to ease deficiencies in large areas of southern and eastern Queensland, and in the northeastern New South Wales. However, large parts of this area continue to have recorded less that 60% of their average rainfall for the period.

Rainfall for the period October 2012 to 26 August 2014

For the 22-month period commencing October 2012, serious to severe deficiencies (lowest 10% to 5% of records) remain in a large area of inland Queensland away from the eastern coast and also in smaller areas in adjacent parts of the Northern Territory and South Australia, and in an area inland of the Great Dividing Range extending from southern Queensland into northern New South Wales.

The rainfall in the last week eased deficiencies slightly in southern Queensland, northern New South Wales and a small area of the coast of Western Australia. Elsewhere, deficiencies remained largely unchanged compared to last week.
Areas of inland Queensland and parts of adjacent States and an area of the coast of Western Australia have received less than 60% of average rainfall for the period.

Please Note: The Australian Bureau of Meteorology is not responsible for drought declarations. Drought declarations are the responsibility of the State Governments, and take account of other factors in addition to recent rainfall patterns. Some links to state government departmental web sites are given in the right hand column.

Product Code: IDCKGRWAR0