Weekly Rainfall Update

Weekly Rainfall Update
for 7 days to 9 am 21 October 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 Ravensthorpe
(109 mm)
(South Central)
Porongurups
(105 mm)
(South Coast)
Telina Downs
(99 mm)
(South Coast)
NT Charles Point
(35 mm)
(Darwin-Daly)
Territory Wildlife Park
(22 mm)
(Darwin-Daly)
Pinelands
(22 mm)
(Darwin-Daly)
SA Millicent
(9 mm)
(Lower Southeast)
Mount Gambier
(8 mm)
(Lower Southeast)
Lake George
(6 mm)
(Lower Southeast)
Qld Lady Elliot Island
(35 mm)
(Port Curtis)
Babinda Post Office
(33 mm)
(Barron)
Mt Sophia
(31 mm)
(Barron)
NSW/ACT Ulladulla
(164 mm)
(South Coast)
Cronulla South
(154 mm)
(Metropolitan)
San Souci
(144 mm)
(Metropolitan)
Vic Reeves Knob
(59 mm)
(West Gippsland)
Mount Wellington
(56 mm)
(West Gippsland)
Mount Tamboritha
(40 mm)
(West Gippsland)
Tas Mount Read
(47 mm)
(West Coast)
Lake Margaret
(36 mm)
(West Coast)
Queenstown
(34 mm)
(West Coast)
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 21 October 2014, rainfall was recorded in Western Australia, isolated pockets of the Northern Territory, parts of coastal Queensland, eastern New South Wales, eastern Victoria and western and northeastern Tasmania.

At the start of the week, a slow-moving low pressure system intensified near the New South Wales coast, bringing heavy rainfall along the southern coast of New South Wales, with moderate falls also recorded in East Gippsland in Victoria.
 
During the middle of the week, a cold front tracked through southeast Australia bringing light falls to eastern Victoria, southeastern New South Wales and western Tasmania.


In the west, a broad low pressure system interacted with a middle level disturbance and generated moderate rainfall totals through southern and central Western Australia, with heavier falls reported on parts of the south coast from mid-week.

At the end of the week, a cold front crossed southern Victoria and Tasmania producing moderate rainfall totals in western and northeastern Tasmania, while showers formed in isolated parts of east coast Queensland and New South Wales in a moist, onshore airflow.

Rainfall totals over 100 mm were reported in parts of the South Coast and Sydney Metropolitan districts of New South Wales, along with some isolated spots in the Central and South Coast districts of Western Australia. The highest weekly total was 164 mm at Ulladulla in New South Wales.

Rainfall totals between 50 mm and 100 mm were recorded in a large part of southern Western Australia and in areas surrounding higher falls along the southern coast of New South Wales.

Rainfall totals between 15 mm and 50 mm were broadly recorded in southern Western Australia extending north into the Eastern Gascoyne district, and in parts of West and East Gippsland in Victoria, parts of the northeast, south and west coast of Tasmania, and isolated parts of the tropical north and southeast coasts of Queensland.

Rainfall totals between 10 mm and 15 mm were recorded surrounding higher falls in central and southern Western Australia, eastern Victoria, western and northeastern Tasmania, southeastern New South Wales, pockets of Queensland's east coast, isolated spots in the Northern Territory, and parts of the Kimberley in far north Western Australia.

Much of inland Western Australia and
the Gascoyne, South Australia, most of the Northern Territory and Queensland away from the coast, inland New South Wales and western Victoria recorded little or no rainfall for the week.

Impact of recent rainfall on deficits

The Drought Statement issued on 6 October 2014, discusses rainfall deficits over Australia for the 10-month (December 2013 to September 2014) and the 24-month (October 2012 to September 2014) period ending 30 September 2014. The rainfall deficit maps will be available for the 10-month and 24-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 10-month and 24-months ending 21 October 2014. Only the areas that experienced serious or severe rainfall deficiencies for the corresponding period ending 30 September 2014 are analysed, the rest of the map is masked in grey shading.

Rainfall to date for 10-month period
Drought Period 1- click on map for larger image

Rainfall to date for 24-month period
Drought Period 2- click on map for larger image


Rainfall for the period 1 December 2013 to 21 October 2014

Serious to severe deficiencies (lowest 10% to 5% of records) are in place across a large area of northeastern New South Wales and southeastern Queensland, western Victoria, eastern Tasmania and small areas of the southern coast of Western Australia.

Compared to last week, there has been a slight increase in deficiencies in parts of southeast Queensland, northeastern New South Wales, western Victoria and a small area of northwestern Tasmania. Some easing of deficiencies is evident along the south coast of Western Australia. Much of these areas have recorded less that 70% of their average rainfall for the period.

Rainfall for the period 1 October 2012 to 21 October 2014

Serious to severe deficiencies (lowest 10% to 5% of records) remain in a large area of inland Queensland away from the eastern coast and in smaller areas in adjacent parts of the Northern Territory, South Australia and northern New South Wales inland of the Great Dividing Range. Much of these areas have received less than 70% of average rainfall for the period. Deficiencies are also evident in much of inland western Victoria, extending across the border into part of southeastern South Australia, and in an area of the southern coastal Gascoyne around Shark Bay in Western Australia.

Deficiencies have increased slightly compared to last week across much of eastern Australia.

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