Add Yahoo as a preferred source to see more of our stories on Google. Rain on burned hillslopes can trigger dangerous floods and debris flows. Those debris flows can move with the speed of a freight ...

Add Yahoo as a preferred source to see more of our stories on Google. A debris flow channel in a severely burned watershed in Idaho. Amirhossein Montazeri/Boise State University, CC BY-ND As the Los ...

As the Los Angeles area recovers from devastating wildfires, officials and emergency managers worry that rain could trigger mudslides in the hills and mountains. Rain on burned hillslopes can set off ...

After a wildfire, the danger continues, especially during torrential rain that can set off fast-moving landslides known as debris flows. By Amy Graff Amy Graff is a San Francisco-based reporter on The ...