Through February, exceptional water deficits are forecast in India from Gujarat through Maharashtra and Karnataka, and deficits of varying severity in many regions south of the Gangetic Plain and to the west in Rajasthan. In Pakistan, isolated intense deficits are possible in Karachi. Moderate deficits are forecast in northern Afghanistan, but conditions may be intense northeast of Kabul and along the Harirud River in the west. In Bangladesh, exceptional surpluses are forecast in Chittagong.
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Through September, exceptional water deficits will increase in Afghanistan, reaching the southern border to dominate roughly two-thirds of the country. Deficits in southern Pakistan are expected to shrink and moderate; moderate surpluses are forecast along the Indus River in the north. In India, primarily moderate deficits will persist in a wide band across the center of the country, but may be more intense in Madhya Pradesh, Chhattisgarh, Jharkhand, and Odisha. Deficits will increase and intensify in southern India. Surpluses in Bangladesh will shrink and downgrade.
Exceptional water deficits are forecast to persist in Afghanistan, retreating slightly in the north but increasing in the south. Pakistan should get a reprieve as intense deficits diminish considerably, leaving moderate to severe conditions in western Baluchistan. India will transition out of widespread deficit to milder conditions, with moderate deficits in the south and more severe deficits in the Far Northeast, particularly Assam. Surpluses will downgrade to moderate in West Bengal, and will shrink and downgrade in Bangladesh while remaining fairly intense, especially in Dhaka Division.
Exceptional water deficits will remain widespread in Afghanistan, while decreasing slightly. Deficits in Pakistan will generally moderate. India will transition from widespread water deficits to milder conditions. However, exceptional deficits are forecast surrounding Chandigarh, moderate deficits in Rajasthan, and intense deficits in the Far Northeast. Surpluses are expected in Jammu and Kashmir, northern Odisha, West Bengal, and along the Tapi River. Intense surpluses are forecast for the Gandaki River in Nepal. Moderate to extreme surpluses are forecast for northern Bangladesh.
Regions forecast to have significant water deficits for the 12-month period from February 2018 through January 2019 include: Brazil, southern Venezuela, Libya, Egypt, Gabon, Finland, Saudi Arabia, and Afghanistan. Areas with a forecast of significant water surplus include: Idaho and western Montana (US), southeastern British Columbia (Canada), Tanzania, Kenya, Spain, Hungary, southern Romania, and eastern Ukraine. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 9 May 2018.
Through May, intense water deficits are forecast for India’s northern half, moderate deficits in the south, with exceptional conditions in Karnataka along the Tungabhadra River. Intense surpluses are forecast for Jammu and Kashmir, West Bengal, and the western Penner River Basin in India, as well as Bangladesh and Nepal. Surpluses of lesser severity are forecast for western Maharashtra. Intense deficits are forecast for Afghanistan and southern Pakistan. After May, deficits in India will be mild in the north, moderate in the south, and mild surpluses will emerge across the middle.
Intense water deficits are forecast to persist in central India and western Karnataka through April 2018. In the near-term through January, deficits will continue to emerge across India’s northern half and may be exceptional in Haryana and Punjab; moderate deficits are forecast for Afghanistan and Pakistan. After January deficits will moderate except in central India and western Karnataka. Surpluses reaching exceptional severity are forecast through April in Bangladesh and Indian states to the east, as well as western Bhutan, Nepal, West Bengal, Jammu and Kashmir, Andhra Pradesh, and Sri Lanka.
The near-term forecast through October indicates that exceptional deficits will nearly disappear in India but moderate to severe deficits will continue to emerge, covering much of the north/south extent of the country. Surpluses are forecast for Gujarat, Jammu and Kashmir, West Bengal, and Mizoram. Deficits are forecast for southern Afghanistan, central and southern Pakistan, and eastern Bhutan. Exceptional surpluses will continue to emerge in much of Bangladesh and central Nepal. Deficits in Sri Lanka will ameliorate, leaving moderate deficits in the east. Beyond October primarily moderate deficits will continue to emerge in central India through April 2018.
The August forecast indicates a few areas that will see drier than normal conditions, including northern India from Gujarat through the center of the country; and, along the southern and eastern shores of the Black Sea. But once again it is the temperature forecast that commands attention with vast areas of northern South America and the Middle East forecast to be exceptionally hotter than normal, as well as many other parts of the world with a forecast of warm anomalies of varying severity.
Severe to exceptional water deficits are forecast to emerge April through June across central and southern India. Deficits will also emerge near Karachi, Pakistan and will continue to emerge in western Pakistan. Surpluses are forecast in Jammu and Kashmir, eastern Afghanistan, and along the northern Indus River in Pakistan. From July through September deficits in India will decrease in intensity but increase in extent as deficits emerge in the Chambal River watershed. Severe to extreme deficits will persist in Madhya Pradesh. Moderate to severe deficits are also forecast to emerge throughout Bangladesh.