Debris flows are fast-moving, deadly masses of mud, rocks, boulders, entire trees - and sometimes, homes or vehicles. They are similar to landslides but often carry, or “flow,” over a large area.
Debris flows will often be called "mudslides" or "mudflows". Many people use the terms interchangeably, but to scientists, each is a different kind of landslide and debris flows are the most powerful and dangerous of the three. They move faster than a person can run.