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.
|State||Highest||2nd Highest||3rd Highest|
|Yirrkala Tropical Gardens
|NSW/ACT||Boat Harbour (Rous River)
(Upper North Coast)
(Lower North Coast)
|Rosebank (Repentance Creek)
(Upper North Coast)
|Vic||Falls Creek (Rocky Valley)
|Lucaston (Bakers Creek)
The table above lists the highest rainfall totals for each State and the Northern 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.
For the week to 24 February 2015, rainfall was recorded in all States and Territories.At the start of the week, eastern parts of Arnhem Land recorded heavy rainfall as tropical cyclone Lam became established along a monsoon trough located over the northeast Gulf of Carpentaria. A surface trough extending from inland western Queensland, through New South Wales and central Victoria triggered thunderstorms and showers, producing moderate rainfall totals for parts of eastern Victoria and through central New South Wales, with light rainfall for southwest Queensland. A moist, onshore flow brought showers to the southeast Queensland and northern New South Wales coasts with light falls recorded through the area.
The Drought Statement, issued on 5 February 2015, discusses rainfall deficits over Australia for the 7-month (July 2014 to January 2015), and 28-month (October 2012 to January 2015) 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 7-month and 28-months ending 24 February 2015. Only the areas that experienced serious or severe rainfall deficiencies for the corresponding period ending January 2015 are analysed, the rest of the map is masked in grey shading.
|Rainfall to date for 7-month period|
|Rainfall to date for 28-month period|
Serious or severe deficiencies (lowest 10% to lowest 5% of records) remain across parts of the Cape York Peninsula and a small area of Queensland’s north coast west of Innisfail, in the northwestern tip of Tasmania, extending between southwest Victoria into southern and western agricultural areas of South Australia, and in parts of the Pilbara coast and Gascoyne in Western Australia.
Compared to last week, rainfall deficiencies have eased in eastern parts of Cape York Peninsula with some of the areas receiving 80% to 90% of their average rainfall for the period. Deficiencies also eased slightly in coastal South Australia but little change to deficiencies elsewhere. Parts of central to western Victoria and southern South Australia have received less than 60 to 40% of average rainfall for the period. A large area on the central west coast of Western Australia has received no more than 40% of average rainfall for the period.
Serious or severe deficiencies remain in place across inland northern Queensland and an area inland of the Great Dividing Range spanning the border of Queensland and New South Wales. Deficiencies also remain in place across much of central western Victoria, crossing into southeast South Australia.
Large parts of inland Queensland, northeastern South Australia, northeastern New South Wales inland of the Great Dividing Range and the coastal Gascoyne have received less than 70% of the average rainfall for the period. Central to western Victoria and adjacent parts of southeastern South Australia have received less than 80% of average rainfall for the period.
Compared to last week, there was a slight increase in the rainfall deficiencies through inland southern Queensland across the border into northern New South Wales. Rainfall deficiencies eased in northern inland Queensland, with some of this area receiving 70% to 80% of the average rainfall for the same 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.
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