What is an atmospheric river and how does it impact Southern California?

An atmospheric river is a long, narrow region in the atmosphere that transports most of the water vapor outside of the tropics. These storms can bring heavy snow, heavy rain, and strong winds, which can trigger deadly flooding, mudslides, and widespread power outages in Southern California.

Why are recent burn scars at the highest risk of flooding?

Wildfires can significantly alter an area's landscape, and burned soil struggles to absorb water, causing rainfall to run off extremely quickly. This heightens the risk of flash flooding and mudslides for areas downstream of recent burn scars.

What actions are Los Angeles County officials taking to address the flood risk?

Los Angeles County officials have issued evacuation orders for an indeterminate number of homes located near recent burn scars, which are at higher risk of mud and debris flow impacts. Law enforcement personnel are going door-to-door to notify these specific properties and urge residents to follow all directions from emergency responders.

Home / Weather / Atmospheric River Prompts Evacuation Orders Across Southern California

Atmospheric River Prompts Evacuation Orders Across Southern California

14 Nov

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Summary

Millions face flood risk as atmospheric river hits SoCal
Evacuation orders issued for homes near recent burn scars
Heavy rain, strong winds, and potential for deadly flooding

Atmospheric River Prompts Evacuation Orders Across Southern California

On November 14, 2025, a powerful atmospheric river is set to hit Southern California, bringing a deluge of torrential rainfall that threatens millions of residents with the risk of severe flooding. The National Weather Service has issued a flood watch for the region, warning of the potential for widespread flash flooding and debris flows, particularly in areas near recent wildfire burn scars.

In response to the impending storm, Los Angeles County officials have issued evacuation orders for an indeterminate number of homes that are at higher risk of mud and debris flow impacts. The orders, which went into effect on Friday night at 8 p.m. local time and will remain in place through Sunday morning, target properties located near the Canyon, Bethany, Eaton, Palisades, Hurst, Kenneth, Sunset, Lidia, Franklin, and Bridge burn scars.