The heat wave poses risks to vulnerable populations, including the elderly, children, and those with pre-existing health conditions. High surf along the Southern California coast increases the danger of rip currents and coastal erosion, potentially impacting swimmers and surfers. The combination of heat and humidity can lead to heat-related illnesses, such as heat exhaustion and heat stroke, if precautions are not taken. Coastal areas may also experience localized flooding or damage due to elevated surf conditions.