The forecast through December indicates that water deficits will shrink in the West and Southwest, downgrading considerably, but will remain intense in the Northeast and in Florida, and will emerge in the central Plains.
United States: Severe water deficits forecast to persist in the Southwest, surpluses in Idaho
The forecast through June indicates that deficits will diminish and downgrade in the South Atlantic States, retreat considerably in the Gulf States, downgrade to moderate in the Southern Plains States, persist with intensity in the Southwest, and shrink in central California. Surpluses are forecast for Idaho, Montana, western Wyoming, Nebraska, South Dakota, Iowa, Missouri, and along the Missouri and Yellowstone Rivers. Surpluses will be exceptional in Idaho and Montana. Surpluses in the Ohio River Valley will diminish. After June, anomalies will downgrade, but persist.
United States: Water surplus to persist in Ohio River Valley, emerge on Missouri River
Water surpluses will continue to emerge in southern Michigan and the Ohio River Valley. Exceptional surplus is expected on the Missouri River, western Montana, Idaho, and Washington. Intense deficits will continue in the West and Southwest. Moderate deficits are forecast for Oregon, Kansas, western Oklahoma, and most of Texas west of the Brazos River, with severe conditions in the Panhandle. Missouri, Arkansas, Louisiana, and Mississippi will transition out of deficit, with moderate surplus emerging in Arkansas into surrounding states. Deficits in the Mid-Atlantic States will shrink.
ISciences Worldwide Water Watch List March 2018
Regions forecast to have significant water deficits for the 12-month period from December 2017 through November 2018 include: the US West, Southwest, and South Atlantic States; southern Venezuela; Uruguay; northeastern Argentina; Finland; northern Africa and Gabon; and southern Iraq. Areas with a forecast of significant water surplus include: the Ohio River Valley and western Montana (US); Paraguay; Tanzania and Ethiopia; Ireland; Central and Eastern Europe; and European Russia. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 7 March 2018.
Global Precipitation & Temperature Outlook for November 2017
South Africa stands out in the November Outlook with a forecast of exceptionally hotter than normal temperatures. Much of Asia, Indonesia, and the southern and eastern US are expected to be warmer than normal. Much drier than normal conditions are expected in a path following the Andes from Colombia through Brazil, while wetter than normal conditions are forecast for the US Northern Plains states and pockets of central Africa.