Coastal communities, including Long Beach, Newport Beach, and San Diego, are at heightened risk of flooding, with some areas already experiencing water intrusion and structural damage. The NWS warns of potential damage to porches, awnings, and trees, as well as hazardous seas off the San Diego coast. Inland areas, including the Mojave Desert and Inland Empire, could see flash flooding due to moderate rainfall. Coastal erosion and life-threatening rip currents are also expected, with swells reaching 3 to 6 feet in some areas.