Debris and Mud Flows Block Topanga Canyon Boulevard

Powerful storm system drenches Southern California, prompting flood warnings and evacuations.

Published on Feb. 17, 2026

Got story updates? Submit your updates here. ›

Heavy rain moved across Southern California on Monday, causing debris and mud flows that blocked Topanga Canyon Boulevard. The first in a trio of storms expected to hit the Southland this week also brought colder winter temperatures and significant snow in the mountains, with forecasts calling for about 1 to 3 inches of rain in coastal and valley areas and 2 to 5 inches in the mountains by late Monday.

Why it matters

The powerful storm system has led to dangerous flooding conditions, prompting evacuation warnings for people living in burn scar areas. The road closures and debris flows pose a threat to public safety and disrupt transportation in the region.

The details

Topanga Canyon Boulevard was flooded with debris and mud flows as the heavy rain moved through the area. A flash flood warning and evacuation warnings have been issued for residents in burn scar areas. The first of three storms expected this week is forecast to bring the heaviest rainfall, with 1 to 3 inches expected in coastal and valley regions and 2 to 5 inches in the mountains.

  • The first storm is expected to hit Southern California on Monday.
  • The storm is forecast to bring heavy rain through late Monday.

The players

National Weather Service

The federal agency that provides weather forecasts and warnings for the United States.

Got photos? Submit your photos here. ›

The takeaway

This powerful storm system is creating dangerous flooding conditions in Southern California, underscoring the need for residents to heed evacuation warnings and take precautions to stay safe during severe weather events.