Much-need rain has begun to fall over Southern California, bringing relief to the drought-stricken region but also the threat of toxic runoff.

Water was pumped out of the Palisades fire station as a rainstorm hit the area devastated by the historic wildfires.

A major rainstorm sweeping through the Los Angeles area is threatening Southern California's recovery from this month's devastating wildfires, creating dangerous conditions that could include debris flows and mudslides.

High rain over a burn scar may result in debris flows or mudslides. Follow the instructions of local officials!” the National Weather Service said.

There is a 10% to 20% chance of flash flooding and landslides in some recently burned areas of Los Angeles County, forecasters say, including the Palisades and Eaton fire areas.

Douglas McIntyre, editor-in-chief at Climate Crisis, highlights the compounding disasters facing Los Angeles. Following weeks of wildfires that destroyed vegetation critical for stabilizing soil, heavy rainstorms are causing devastating mudslides.