The high tides and coastal flooding pose significant risks to low-lying areas along California's coast. San Diego and Orange counties are expected to experience the most severe impacts, including inundation of homes, businesses, and infrastructure. Other counties, such as Los Angeles and Ventura, may see moderate-to-significant beach erosion and isolated structural damage. The combination of El Niño-driven weather patterns and high tides could worsen flooding and erosion, particularly in vulnerable coastal communities. Residents and businesses in these areas should prepare for potential disruptions and property damage.