Super El Niño Expected to Bring Above-Average Rainfall to Southern California, Raising Flood and Erosion Concerns
Southern California is preparing for a 'Super El Niño' event, which is forecasted to deliver above-average rainfall to the region. According to the National Oceanic and Atmospheric Administration (NOAA), El Niño occurs every two to seven years when eastern tropical Pacific Ocean temperatures rise at least 0.5 degrees Celsius above average for several months, weakening trade winds and leading to a buildup of warm water. This year's El Niño is classified as 'Super' due to tropical Pacific waters rising several degrees above the normal El Niño range, compounded by a large marine heatwave that began in spring 2025. While a 'Super' classification doesn't guarantee 'super' rainfall, forecasts suggest conditions similar to the strong 1997-98 El Niño, which caused record rainfall, mudslides, and flooding in California. Dr. Clarissa Anderson, a researcher at Scripps Institution of Oceanography, noted that Kelvin waves, which push warm water towards the American coasts, began in early October, with peak El Niño ocea...