Exceptional deficits throughout Africa will persist in northwestern, northern, and central countries. Surpluses will remain along the Sahel.
Exceptional deficits will remain throughout the Amazon and the Boliviarian Nations. Similar deficits will occur in northeastern coastal regions of Brazil, in Argentina, and in Chile.
The forecast for November 2024 expects significant water deficits for the 12-month period of August 2024 through July 2025 in northern South America, Canada, northwestern and eastern China, and northern to central Africa. Areas expected to experience surplus include central Africa, South Asia, and Central America.
With the release of WSIM v3 and 8 years of additional data, we reevaluate drought risk in the Amazon and the historic drought that continue to affect the region.
The forecast indicates that extreme to exceptional surpluses in northern Australia will diminish, though will still remain present in some regions of Northern Territory. Exceptional deficits across the continent will similarly dissipate, though severe deficits are expected along the southern coast of Victoria.
Exceptionally hotter than normal temperatures are indicated in the April 2022 Outlook for many regions in the Middle East, Central and South Asia, Siberia, and the Yellow (Huang He) and Yangtze River Basins in China. In Central Asia and parts of the Middle East conditions will also be drier than normal.
The forecast through June indicates that water surplus will shrink in European Russia, persist in the Tom River watershed, and transition to deficit in the Ob River watershed. Deficits will emerge surrounding Orenburg on the Ural River, and between the Lower Tunguska and the Angara Rivers in the Yenisei watershed. In Kazakhstan, surpluses will emerge and persist in the north, but diminish elsewhere; deficits will emerge in the west, which will be extreme on the Ural River. Intense deficits are forecast for Turkmenistan, eastern Uzbekistan, western Kyrgyzstan, and Tajikistan.
Drier than normal water conditions will persist in many parts of northern Russia from the White Sea past the Central Siberian Plateau through September. Surpluses will persist in the Ural River watershed in Kazakhstan, and also in the central, northeastern, and eastern parts of the country. Surpluses are forecast to persist in eastern Kyrgyzstan, and moderate deficits in Uzbekistan. An expanse of exceptional deficits between the Irtysh and Yenisei Rivers in Russia is forecast to transition to exceptional surplus from April through June.
The December 2016 Precipitation & Temperature Outlook indicates that many parts of South Asia, East Asia, and Southeast Asia are forecast to be much warmer than normal. Significant dry anomalies are expected to envelope Sri Lanka. Wet anomalies are forecast for Kazakhstan, northern Mongolia, Myanmar, the Malaysian Peninsula, Western Australia, Cameroon, Equatorial Guinea, Gabon, and Venezuela.
Water surpluses in Kazakhstan will begin to transition to conditions of both deficits and surpluses in the next few months. Moderate to severe deficits in Turkmenistan and Uzbekistan are expected to continue to emerge through November, abate for several months, and then re-emerge. Surpluses are forecast in the Ob River Basin. Both deficits and surpluses are forecast in the Volga River Basin August through October, followed by widespread and exceptional surpluses November through January.
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