Coastal communities in Southern California are facing significant flooding, with water inundating streets, homes, and businesses. Areas like Newport Beach, Long Beach, and Sunset Beach are particularly affected. The rising sea levels are stressing aging infrastructure, such as seawalls, and threatening local ecosystems. Scientists warn that the combination of El Niño and climate change could lead to more severe flooding during upcoming king tide events around Thanksgiving and Christmas. The ecological impact includes potential harm to marine life and coastal habitats due to prolonged exposure to unusually warm waters.