D.P. Jorgensen S.H. Cannon J. Costa J. Laber Jon J. Major B. Martner J. Purpura K. Werner P. Restrepo 2008 Debris flows, also known as mudslides, are composed gravity-driven mixtures of sediment and water that travel through steep channels, over open hillslopes, and the like. Addressing this issue, US Geological Survey (USGS) and NOAA have established a debris-flow warning system that has the ability to monitor and forecast precipitation and issue timely weather hazard warning. In 2005, this joint NOAA-USGS prototype debris-flow warning system was issued in Southern California and as a result, it has provided valuable information to emergency managers in affected communities. application/pdf 10.1175/2008BAMS2416.1 en American Meteorological Society Joint NOAA/NWS/USGS prototype debris flow warning system for recently burned areas in Southern California article