The forecast through May indicates that the widespread, exceptional water deficits that have dominated Australia in prior months will diminish considerably. However, exceptional deficits are forecast in the far north and in northern South Australia. Severe deficits are forecast in eastern Queensland and extreme anomalies in the Northern Tableland of New South Wales. Intense deficits are also forecast for Tasmania, New Zealand, and New Caledonia.
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The forecast through March indicates that the intense water deficits that have dominated many parts of Australia in prior months will diminish considerably. However, severe to exceptional deficits will persist in Tasmania; along the southeastern coast of Australia from Adelaide past Melbourne; in the Strzelecki Desert in northwestern New South Wales; around Darwin in Northern Territory; and in the Blackwood River region near Busselton in the tip of Western Australia.
The forecast through December indicates that intense water deficits which have dominated much of Australia in prior months will retreat from most regions except the southeast. Deficits will be exceptional in Tasmania, and severe to exceptional along the southeast coast from Adelaide through Victoria and past Canberra. Moderate to severe deficits are forecast for New Zealand. Deficits in New Caledonia will moderate.
Australia & New Zealand: Water deficits forecast for Victoria, New South Wales, Tasmania, & New Caledonia
Moderate water deficits, punctuated by more intense pockets, are expected across much of Victoria and New South Wales (NSW) and across northwestern and northern Australia. Areas of intense deficit include: the southwestern tip of Western Australia; from Melbourne through Canberra past Sydney; and, near Darwin and the Daly River region of Northern Territory. Generally mild deficits are expected in New Zealand. Deficits in New Caledonia will be intense.
Moderate water deficits, punctuated by more intense pockets, are expected across a large portion of the east and southeast including the Murray-Darling Basin, scattered across the north, and in the southwest tip of the country. Deficits are expected to be intense in Tasmania, pockets along the southeast coast, the southwest tip, Darwin and the Daly River region, and along the southern shore of the Gulf of Carpentaria. Intense deficits are forecast for New Caledonia.
The June Outlook indicates much warmer than normal temperatures (40+ years return period) blanketing a large block of Northeast China and stretching across the border well into Russia. Much of Europe is forecast to be warmer than normal, as well as many parts of Indonesia, while much cooler temperatures will prevail in parts of Central Africa. Conditions are expected to be much wetter than normal for several African nations along the Atlantic near the equator.
A transition away from significant water deficit is forecast for mainland Australia. Exceptional deficits will shrink considerably, retreating to Channel Country in central Australia. However, intense deficits are forecast for western Tasmania, coastal Victoria, Darwin, and the southeastern tip of Western Australia. Moderate deficits are forecast for the remainder of New South Wales, much of South Australia, Northern Territory, and much of the northern half of Western Australia. Moderate deficits are forecast for North Island New Zealand, and New Caledonia.
The April 2018 Outlook indicates wetter than normal conditions in India, East Africa, and northwest Brazil. Significantly warmer than normal temperatures are forecast for Far East Russia and Alaska, much of eastern China, particularly the Yangtze River Basin from Shanghai to Chongqing, and eastern Australia from Brisbane to Canberra.
Mainland Australia is forecast to transition from widespread exceptional water deficit to mild conditions, with more intense deficits in Tasmania. Areas of moderate deficit include eastern South Australia, Victoria, the Murray-Darling Basin, and the east coast to Brisbane. Surpluses will persist in the Kimberley region, WA; shrink along the Victoria River and emerge in Arnhem Land, NT; re-emerge in northern Cape York Peninsula, QLD; and continue to emerge in the Mackenzie River area west of Rockhampton, QLD. Deficits in New Caledonia and New Zealand will moderate.
Exceptional deficits observed in recent months are forecast to nearly disappear, though intense deficits will persist in western Tasmania and the southwestern tip of Western Australia. The near-term forecast includes moderate deficits in South Australia, becoming more intense past the Eyre Peninsula and along Victoria’s coast. Moderate deficits are expected in the eastern Murray-Darling Basin which may be more severe in Riverina, and moderate deficits are forecast for New Zealand. After March, deficits will be mild overall but more severe in Busselton, Tasmania, and New Zealand.