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Research and development Projects Projects Snow as a water resource Projects Projects Projects Projects Projects Projects Projects Projects Projects Projects Projects Mountain ecosystems Tree line Projects Climate change Projects Mountain forest Projects Soil stability Projects Biodiversity Projects Services and products Events Expert opinions and advice Software packages RSS Feeds Data service Guided tours and exposition Books/brochures/CDs Information sheets Media Press releases New Head at SLF Anniversary ceremony The SLF celebrates Press releases 2009 ISSW Bilder The SLF Activities History Beginnings snow and avalanche research History of avalanche bulletin Organisation Snow and Permafrost Snow Physics Staff Infrastructure Publications Picture gallery CT-Images Links Projects Staff Staff Natural hazards Staff Projects Snow Cover Staff Projects Projects ALPINE-3D Snow Surface snowpack variability Snow distribution Snowdrift Modelling Snowpack in Antarctica Swiss Experiment Publications Wind forces on plants Fracture propagation Digital Snow Heat Conductivity A natural fridge Supporting structures Nature identical snow Active layer replica method Snow cover Sintering of snow Fracture Mechanics Snow Surface Snowpack How much snow is lost to evaporation? Extremes Snowcover Metamorphism of snow Preparation of Pistes Avalanches, Debris flows, Rockfalls Staff Projects Remote Sensing RAMMS FAQ Snow Chute Experiments catching dams AVAL-1D KTI-Hangmuren The Mattertal Instrumented Field Sites Snow Chute Experiments Laboratory debris flow channel Walenstadt (SG) Illgraben St. Leonard (VS) Avalanche Experiments Bibliography Mountain Hydrology Group Snow Hydrology Projects Verification Alpine3D Runoff gaging station Glacier hydrology Snow Cover's Spatial Distribution EBISCO Community Ecology Mountain Ecosystems Staff Topics Land use and climate change Mountain forest Tree line Soil stability Biodiversity Projects Forest Expansion Forest grazing Wind erosion and desertification Wind erosion control Alpine treeline Winter tourism Summit flora Biodiversity and Soil Stability News Warning and Prevention Staff Staff Projects Staff Projects Publications Staff Projects Survey Avalanche Bulletin IFKIS-Hydro Employees Personal Homepages Jan Magnusson Martin Schneebeli Frank Graf Peter Bebi Marc Christen Christian Rixen Christine Huovinen Betty Sovilla Cornelia Accola Dr. Ariane Walz Tobias Jonas Julia Kowalski Luca Egli, Dipl. Phys. ETH Michaela Teich Christoph Marty Publications Oliver Korup Nora Helbig Benjamin Zweifel Christoph Rheinberger Corina Lardelli Michel Bovey Martin Heggli Marius Roman Schaefer Frank Krumm Melissa Dawes Nicholas Dawes Sonja Wipf Jürg Schweizer Publications Perry Bartelt Hans-Jürg Etter Momchil Panayotov Stefan Margreth Christoph Mitterer Christof Gromke Henning Löwe Katrin Burri  Benjamin Walter Dr. Yves Bühler Ignacio Barbeito Locations and test sites Wind Tunnel Jobs WSL Contacts Snow and avalanche infos Avalanche bulletins Regional avalanche bulletins Snow and avalanche information for the Jura National avalanche bulletin Hazard map Snow information New snow 24 h New snow 3 days Snow depth Snow depth 2000/2500m Snow depth % Snowpack stability Data snow stations Feedback Additional info European Danger Scale Interpretation guide What are bulletins? Target audience Issuer Resources Bulletins Info National Bulletin Info Regional Bulletin Avalanche danger terminology Definition avalanche danger Danger levels European Scale Danger levels Info danger spots Recommendations Geographical terminology Publication frequency Supporting products Danger Map Snow Depth Map Snow Depth 2000 m New Snow Map Snow depth % Stability Map Weekly report Icons Distribution channels Capabilities and limitations Feedback Closing remarks Info products How are bulletins produced? Icon map Wind and temperature data Archiv Prevention Avalanche Accidents Long-time avalanche statistic