Southern California Braces for Flash Floods: Atmospheric River Brings Heavy Rain (2025)

Flash Floods Threaten Southern California as Atmospheric River Brings Intense Rainfall

LOS ANGELES (AP) -- Southern California is facing an unprecedented deluge as an atmospheric river, a powerful storm system, unleashed torrential rain across the region on Saturday. This event has raised concerns, especially in areas that were recently scarred by wildfires, where flash flood warnings are in effect. The National Weather Service reported intense rainfall rates of up to an inch per hour in coastal regions, heightening the risk of flash flooding.

The storm's impact began on Friday, when Santa Barbara County received over four inches of rain, prompting the National Weather Service to urge residents to stay indoors due to heavy winds. The atmospheric river, a long plume of tropical moisture, started its journey over the Pacific Ocean, drenching the San Francisco Bay Area on Wednesday and continuing its path to Southern California. By Friday and Saturday, the storm unleashed widespread rain, with predictions of more than a foot of snow in the Sierra Nevada.

The flood warnings extended from Ventura County's coast, through Malibu, and into the heart of Los Angeles. The city's mayor, Karen Bass, emphasized the severity of the situation, stating, 'Due to the potential for debris flows, an Evacuation Warning remains in effect within and around all recent burn scar areas, and select vulnerable properties remain under Evacuation Orders.' Mandatory evacuation orders were issued for specific high-risk properties in the Palisades and Eaton fire burn areas from Friday evening to Sunday morning, with law enforcement urging residents to leave.

This event highlights the ongoing challenges of managing extreme weather events in California, particularly in areas affected by wildfires, where the risk of flash floods and debris flows is heightened. The storm's intensity and the potential for rapid water accumulation underscore the importance of heeding evacuation warnings and orders to ensure public safety.

Southern California Braces for Flash Floods: Atmospheric River Brings Heavy Rain (2025)
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