The forecast for April 2025 expects significant water deficits for the 12-month period of January 2025 through December 2025 in the southwestern United States, eastern Europe, Mexico, central and northern Africa, central and northern South America, and Central Asia. Areas expected to experience surplus include central and southern Africa, northeastern Australia, and portions of the Amazon rainforest.
In this new series, we examine recent prolonged drought in the Yangtze River Basin, its impact on the affected regions, and the historical accuracy of the Water Security Indicator Model (WSIM) forecasts in East Asia.
Exceptional deficits will spread throughout the Russian Plain, northern coastal Russia, and regions near Lake Baikal. Surpluses are expected in some portions of northern Russia and north-central Kazakhstan.
Exceptional deficits throughout the continent will significantly decrease in size and intensity, but will persist in some portions of Brazil. Severe to exceptional surpluses are expected to emerge in the western Amazon Basin.
Widespread deficits in South America will diminish in some countries, but will remain present in several regions of the Amazon, as well as some portions of the Andes.
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.