Coastal communities in Southern California are facing increased risks of flooding, erosion, and infrastructure damage. Areas like Newport Beach, Long Beach, and Malibu have already experienced significant impacts, including flooded streets and damaged seawalls. Residents are concerned about the potential for even more severe flooding during upcoming high tide periods around Thanksgiving and Christmas. The ecological impact is also notable, with warmer waters disrupting marine life and coastal ecosystems. Scientists warn that the combination of El Niño and long-term climate change could lead to more frequent and severe coastal flooding events.