A powerful El Niño is building in the Pacific, with scientists stunned by its rapid development and potential historic strength, expected to be the strongest on record. Forecasters warn of significant impacts across various regions, including California, where an exceptionally wet winter is anticipated. Wildfires, fisheries disruption, and a global economic decline of up to $3 trillion are among the potential consequences. Regions from Hawaii to Peru are bracing for challenges such as droughts, heatwaves, and flooding. Experts caution that this supercharged El Niño could exacerbate existing climate change concerns, with wide-ranging implications for food prices and global supply chains.