skredfaren

Skredfaren is the term used to describe the risk of rapid mass movement in snow-covered terrain, most commonly snow avalanches (snøskred), but also including other forms of mass movement such as landslides. In Norway, skredfaren is a central part of winter safety, land-use planning, and backcountry decision-making, and is monitored by public authorities and emergency services.

Assessment and communication of skredfaren are typically done on a scale from 1 to 5, where higher numbers indicate greater danger. Forecasts and danger maps are updated daily during the snow season and are published by authorities such as the Norwegian Water Resources and Energy Directorate (NVE) in collaboration with the Norwegian Meteorological Institute, and disseminated through services like Varsom.

Causes and factors contributing to skredfaren include snowpack instability, weather conditions (heavy snowfall, rapid warming, rain-on-snow events), wind loading, temperature fluctuations, and terrain features such as slope angle and aspect. Weak layers within the snowpack can trigger avalanches, especially on slopes steeper than about 30 degrees. While snow avalanches are the primary concern, other forms of mass movement can also influence the overall hazard in a given area.

Safety implications are addressed through public advisories and forecast updates. Travelers and outdoor enthusiasts are advised to check current skredfaren before trips, travel with companions, carry avalanche safety equipment (beacon, probe, shovel), and adjust routes or plans according to the forecast and observed conditions.

See also: avalanche forecasting, skredvarsling, Varsom.