As California endures a significant heat wave, forecasters predict the arrival of late-summer thunderstorms across Southern California. The region is experiencing very warm weather, with high temperatures prompting heat advisories particularly in Los Angeles and surrounding areas. Additionally, monsoonal moisture is expected to bring chances of showers and potential flooding, creating concerns over brush fires and dangerous rip currents along the coast. Various parts of the state, including the Central Coast and Santa Clarita, are under advisories warning of extreme heat and fire risks throughout the Labor Day weekend. Weather officials urge residents to remain cautious as thunderstorms may develop, posing brief heavy rainfall and flooding threats amid continued high temperatures.