The rising sea levels have already caused damage to coastal communities, with 114 homes and structures affected in Huntington Beach alone. Flooding has disrupted neighborhoods, highways, and businesses from Redondo Beach to Long Beach, while Northern California's Marin County saw up to 2 feet of flooding in bayside areas. Scientists warn that upcoming king tides around Thanksgiving and Christmas could further amplify flooding risks. The combination of El Niño, marine heatwaves, and astronomical tidal cycles poses a significant threat to California's coastline, with potential for erosion, property damage, and infrastructure challenges.