Tropical Storm Hilary pounds Southern California with heavy rain, flash flooding

Tropical Storm Hilary made landfall on Mexico's Baja peninsula and moved into Southern California with damaging wind and heavy rainfall on Sunday, Aug. 20, 2023. Forecasters warned of a "potentially historic amount of rainfall" and dangerous flooding. California's governor declared a state of emergency on Saturday, and officials had urged people on Catalina Island and in other high-risk areas to evacuate. Nevada's governor declared a state of emergency on Sunday.