A new rain storm is bearing down on California, including fire-ravaged Los Angeles, where residents are bracing for the ...

When hills are healthy, vegetation can anchor the soil in place. But when that is burned off, hillsides become vulnerable to erosion, and slopes can come crashing down.

Areas scarred by the Eaton Fire are at “high to very high risk” of debris flows this week. How do they happen? What is being done to prepare for storms?

In some areas, hazards have surged. Buildings in the highest severity zones will be subject to the strictest fire-resiliency rules.

Areas charred by last month's wildfires in Southern California now face a new threat from a powerful, but fast-moving Pacific ...