Residents along the Los Angeles and Orange County shorelines are at risk of flooding, particularly in low-lying coastal areas. Parking lots, streets, and homes in Seal Beach, Zuma Beach, and Long Beach have already experienced flooding. Dangerous rip currents and longshore currents make swimming hazardous, especially for inexperienced swimmers. The Los Angeles County Department of Public Health has issued an ocean water quality rain advisory, cautioning against water contact for at least 72 hours after rainfall due to potential contamination.