Weekly Rainfall Update

Weekly Rainfall Update
for 7 days to 9 am 18 November 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 Rawlinna Depot
(109 mm)
(Eucla)
Theda
(94 mm)
(North Kimberley)
Balladonia
(76 mm)
(Eucla)
NT Howard Spring
(96 mm)
(Darwin-Daly)
Pirlangimpi
(59 mm)
(Darwin-Daly)
West Waterhouse
(55 mm)
(Roper-McArthur)
SA Gluepot Reserve 
(30 mm)
(Northeast)
Cromer Road
(27 mm)
(East Central)
Melrose
(26 mm)
(Upper North)
Qld Maryvale
(34 mm)
(East Darling Downs)
Oakington
(30 mm)
(East Darling Downs)
Mt Glorious Fahey Rd
(20 mm)
(Moreton)
NSW/ACT Thredbo
(69 mm)
(Snowy Mountains)
Thredbo Village
(59 mm)
(Hunter)
Cabramurra
(57 mm)
(Southwest Slopes)
Vic Mount Baw Baw
(56 mm)
(West Gippsland)
Lilydale
(51 mm)
(East Central)
Goulburn River
(50 mm)
(North Central)
Tas Mount Read
(56 mm)
(West Coast)
Lake Margaret
(39 mm)
(West Coast)
Lake St Clair
(39 mm)
(Central Plateau)


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 to 18 November 2014, rainfall was recorded across the western half of Australia and the southeast.

At the beginning of the week, a surface trough extending through the Northern Territory and inland Queensland triggered thunderstorms and showers across the northwest of the Northern Territory.

A
deep surface trough extended through central Western Australia to a low pressure system in southwest South Australia and tracked eastward over following days, generating moderate rainfall totals in parts of the west and south of Western Australia. The heaviest falls were recorded along the south coast.

By mid-week, the low pressure system and associated surface trough tracked into the southeast, bringing moderate falls to the southwest and parts of the North West and North East Pastoral districts of South Australia and most of Victoria except the west, with some areas of heavy falls along the Great Dividing Range. Moderate rainfall was also recorded in southeastern New South Wales throughout the Snowy Mountains and South West Slopes.

At the end of the week, a cold front crossed southern Victoria and Tasmania, bringing light falls to Tasmania's west coast and to parts of eastern Victoria and southeastern New South Wales. A surface trough along the west coast of Western Australia produced a cloudband with embedded thunderstorms, bringing moderate falls to the Gascoyne, Pilbara and Kimberley districts in Western Australia.

Rainfall totals in excess of 50 mm were reported in isolated areas on the south coast of Western Australia. Isolated locations in the northwest of the Northern Territory, the Kimberley district, western Tasmania and along the Great Divide and Snowy Mountains in Victoria and New South Wales also reported rainfall totals over 50 mm. The 
highest weekly total was 109 mm at
Rawlinna Depot in Western Australia.

Rainfall totals between 15 mm and 50 mm were recorded in t
he Kimberley, Gascoyne and Pilbara districts and surrounding higher falls in southern Western Australia, isolated parts of the northwest Northern Territory and small parts of southwest and eastern Southern Australia. Weekly totals exceeded 25 mm in central and eastern Victoria, part of southeastern New South Wales and western Tasmania.

Rainfall totals above 10 mm were also recorded in southern, western and northern Western Australia, the northwest and small areas between the south of the Northern Territory and eastern South Australia, and surrounding higher falls in Victoria and the southeastern quarter of New South Wales.


Queensland and adjacent parts of surrounding States and the Northern Territory, western New South Wales, eastern Tasmania, parts of the east and west of Western Australia and northwest South Australia recorded little or no rainfall for the week.


Impact of recent rainfall on deficits

The Drought Statement issued on 6 November 2014, discusses rainfall deficits over Australia for the 4-month (July 2014 to October 2014), 11-month (December 2013 to October 2014) and 25-month (October 2012 to October 2014) periods. The rainfall deficit maps will be available for these periods 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 4-month, 11-month and 25-months ending 18 November 2014. Only the areas that experienced serious or severe rainfall deficiencies for the corresponding period ending 31 October 2014 are analysed, the rest of the map is masked in grey shading.

Rainfall to date for 4-month period
Drought Period 1- click on map for larger image

Rainfall to date for 11-month period
Drought Period 2- click on map for larger image

Rainfall to date for 25-month period
Drought Period 3 - click on map for larger image



Rainfall for the period 1 July 2014 to 18 November 2014

Serious to severe deficiencies (lowest 10% to 5% of records) are in place across large areas of southern New South Wales and northern and western Victoria, extending through southern South Australia to northwest South Australia. Much of the inland southeast has recorded less than 60% of their average rainfall for the period.
Large areas of short-term rainfall deficiencies are also present in western Queensland and the Northern Territory. Some small areas of short-term deficiencies are also present in western parts of Western Australia and southeast Queensland into New South Wales.

Rainfall deficiencies have eased slightly since last week across most regions, especially in the northwest of the Northern Territory. 

Rainfall for the period 1 December 2013 to 18 November 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 and parts of eastern Tasmania. Much of these areas have recorded less than 70% of their average rainfall for the period.

Compared to last week, there was very little change to rainfall deficiencies.

Rainfall for the period 1 October 2012 to 18 November 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.

There was only a very slight change in deficiencies through inland Queensland and in Western Australia, compared to last week.

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