Southern California residents and visitors should prepare for potential disruptions to outdoor activities due to light rain and humid conditions. Coastal flooding and strong rip currents pose risks to beachgoers, with the highest wave activity expected on Sunday and Monday. Areas such as Long Beach, Malibu, and Catalina Island may be particularly vulnerable to flooding during high tides. Inland regions, including the Santa Ana and San Bernardino mountains, could face elevated fire weather risks due to gusty offshore winds. While the chances of heavy rain and flooding are low, localized impacts could occur if Marie's trajectory shifts closer to the coast.