Weekly Rainfall Update
For the week to 18 June 2019, rainfall was recorded across the west and south coast of Western Australia, southern South Australia, most of Victoria, Tasmania, inland southeastern to central New South Wales and along that State's central coast, and in southeastern Queensland and extreme far northeastern New South Wales, and in parts of Queensland's north tropical and eastern Peninsula coast.
An extensive rainband associated with the passage of a sequence of cold fronts and pre-frontal troughs crossed southern Australia during the first half of the week, followed by westerly winds with embedded fronts during the rest of the week. Moderate falls were produced over agricultural districts of South Australia, much of Victoria and Tasmania, and parts of southern New South Wales and the Western Slopes at the start of the week, with light falls across much of the remainder of Victoria and western Tasmania continuing into mid-week.
Light falls were recorded throughout much of the week along the west coast and southwest of Western Australia in a persistent westerly air stream.
Onshore flow across the east coast of northern Queensland led to periods of light to locally moderate falls throughout the week.
Scattered light falls continued over coastal southern Australia during the last part of the week, while a low pressure centre developing on a surface trough offshore of the east coast contributed to moderate to locally heavy falls in the Illawarra in New South Wales and across southeast Queensland.
Rainfall totals in excess of 50 mm were recorded in west coast Tasmania, elevated parts of Victoria's Alpine region and Central Highlands, parts of South Australia's Mount Lofty Ranges, and a small area of New South Wales' Central Coast. Higher weekly totals approaching or exceeding 100 mm were observed in a number of individual locations, including in the Sydney Metropolitan region, the peaks of the Victorian Alps, about Mount Lofty, in West Coast Tasmania, and in Queensland's Moreton South Coast region. The highest weekly total was 116 mm at Mount Read in West Coast Tasmania.
Rainfall totals between 10 mm and 50 mm were recorded along the west coast and southwest of Western Australia and part of the south coast around Esperance; across agricultural districts of South Australia and as far west as Ceduna; across most of Victoria except East Gippsland and parts of the northern border; most of Tasmania except parts of the southeast and east coast; about the South West Slopes and eastern Riverina in New South Wales, extending into parts of central New South Wales and north of the ACT to take in the coastal margin of the Hunter, Metropolitan, and Illawarra. Weekly totals between 10 mm and 50 mm were also observed in southeast Queensland and the adjacent northeastern tip of New South Wales, and some parts of the east coast of Cape York Peninsula and the North Tropical Coast.
Some pockets of the southern Northern Territory and southeast Queensland received falls in excess of 5 mm for the week.
Little or no rainfall was recorded in most of the Northern Territory, most of Western Australia away from the west and south coast, Queensland away from the southeast and east coast, northern and parts of far southeastern New South Wales, and northern and western South Australia.
Impact of recent rainfall on deficits
The Drought Statement, issued on 5 June 2019, discusses rainfall deficits over Australia for the 5-month (January 2019–May 2019), 8-month (October 2018–May 2019) and 14-month (April 2018– May 2019) periods.
Rainfall deficit maps are 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 5-month, 8-month and 14-month periods ending 18 June 2019.
Rainfall for the period 1 January 2019 to 18 June 2019
For the 5-month period, serious to severe rainfall deficiencies are evident across the South West Land Division, and across the South Coast and southern Goldfields districts in Western Australia. Along part of the west coast rainfall has been the lowest on record for the period.
Rainfall deficiencies for January–May were also evident across much of the interior of Western Australia, extending in the north through much of the Northern Territory away from the east and the Top End, and in the south through the Nullarbor Plain and through central South Australia. Deficiencies also affect pockets around the Eyre Peninsula and Mid North; pockets of the coastal Kimberley in Western Australia; along the border of South Australia and Victoria; an area spanning Victoria's Central District and West Gippsland; east coast Tasmania; and northeastern New South Wales and southeastern Queensland.
Rainfall in the last week has eased deficiencies somewhat in affected parts of southern South Australia and Victoria, and very slightly in the South West Land Division in Western Australia. There was generally very little, if any, change in other affected areas throughout Australia.
Much of the affected areas in southeast Queensland, northeastern New South Wales, and southern Western Australia have generally received less than 50% of their average rainfall for the period. Affected areas in the Northern Territory, inland South Australia, and interior Western Australia generally received between 30% and 50% of average. Affected areas in Victoria, Tasmania, and the Kimberley in Western Australia have mostly received more than 50% of average rainfall for the period.
Rainfall for the period 1 October 2018 to 18 June 2019
For the 8-month period, serious to severe rainfall deficiencies are evident in large parts of the northern half of Western Australia, particularly the Kimberley and northern Interior District, and across much of the South West Land Division, and part of the Southeast Coastal District; across a very large area of the central Northern Territory and parts of the west coast of the Top End; areas of central to eastern South Australia away from the far northeast and far southeast, but including some agricultural areas; West and South Gippsland in Victoria, and pockets of the southwest coast and far western Mallee; and across the south of Tasmania. Serious to severe rainfall deficiencies were also present across much of northeast of New South Wales except parts of the coast, adjacent southern border regions of Queensland from the southern Maranoa to the eastern Darling Downs, an area of the southern Central Highlands, and parts of the Capricornia and Wide Bay coasts in Queensland.
The rain that fell in the last week eased deficiencies very slightly in parts of southern South Australia, with very little, if any, change elsewhere.
Affected areas in inland parts of Australia have generally received between 30% and 60% of average rainfall for the period. Affected areas in the South West Land Division in Western Australia, and in northeastern New South Wales and southeast Queensland have generally received between 40% and 70% of their average rainfall for the period, while affected areas in Victoria, Tasmania, and southern South Australia have generally received more than 60% of average rainfall for the period.
Rainfall for the period 1 April 2018 to 18 June 2019
Serious or severe rainfall deficiencies are in place at the 14-month period across most of the northeastern quarter of Western Australia, except parts of the inland Kimberley, extending to the northeastern Gascoyne and eastern Pilbara, and also across the South West Land Division and Southeast Coastal districts in Western Australia. Rainfall deficiencies also affect most of the Northern Territory away from the Top End and eastern border regions; most of central and eastern South Australia, away from the far northeast and far southeast; most of the Warrego and Maranoa, Darling Downs, Central Highlands and Capricornia districts in Queensland; large areas of western, central southern, and northeastern New South Wales, extending inland through the Central West Slopes and Plains and part of the South West Slopes, and a pocket around the Illawarra; areas of Victoria in the Mallee, Northern Country, Central, and West and South Gippsland districts; and along the fringe of east coast Tasmania.
Rainfall over the last week has eased deficiencies slightly across southern South Australia, and parts of Victoria, with very little, if any, change elsewhere.
Affected areas across northern parts of Western Australia, the Northern Territory, central South Australia, western and northern New South Wales, and the southern Maranoa District in Queensland have generally received less than 60% of average rainfall for the period. Remaining affected areas of the eastern states, southern South Australia, and southern Western Australia have generally received between 80% and 50% of average rainfall for the period.
Product code: IDCKGRWAR0