El Niño's impact on different countries can vary, with some experiencing direct and short-term effects while others facing longer-term implications for growth, inflation, and social stability. The severity of the impact depends on how ocean warming affects atmospheric temperature and rainfall patterns, leading to drought risks in Southeast Asia, Australia, Brazil, Colombia, Africa, Central America, and the Caribbean, and increased rainfall in the United States, Argentina, and the Andes if Morgan Stanley Senior Global Economist Rajeev Sibal'sweather models are accurate.