The heatwave in California and the Pacific Northwest poses risks of heat-related illnesses, particularly in areas with limited overnight cooling. Vulnerable populations, such as the elderly and those without air conditioning, are at higher risk. In the Southeast, heavy rainfall increases the likelihood of flash flooding, especially in coastal areas from Texas to the Florida Panhandle. Flooding could disrupt transportation and damage property, while rip currents pose a danger to swimmers and beachgoers.