Each month, ISciences reports on significant weather events occurring throughout the world and analyze how accurately our Water Security Indicator Model (WSIM) predicted them. In this series, we highlight the most severe global weather events which occurred during the month of April, and discuss the extent of their impact on the affected regions.

Exceptional deficits will remain in northwestern China, while regions of the Yangtze River Basin will observe an expansion of exceptional deficits across the region. 

Extreme to exceptional surpluses in India will resolve, leaving moderate surpluses in central and eastern portions of the country. Deficits are expected to spread in portions of Afghanistan, Pakistan, and northern India. 

Extreme to exceptional surpluses in Maritime Southeast Asia will diminish, though some regions will observe continuing severe to extreme surpluses. Isolated regions in Mainland Southeast Asia will observe exceptional deficits. 

Widespread surpluses in southwestern Russia will mostly diminish. Exceptional deficits are expected in portions of the Urals, European Russia, northern coastal Russia, and in regions east of Lake Baikal. 

Severe to exceptional deficits along the southern coast of Australia will dissipate, though some will continue in Victoria and New Zealand. Severe to exceptional surpluses will continue in Queensland. 

Surpluses of varying intensity will spread further throughout regions of the Sahel, and in southern Africa. Exceptional deficits will remain in northern Africa and central Africa, as well as along the Gulf of Guinea.