The Avalanche problems aim to describe typical situations as they occur in avalanche terrain. 

The goal is to support recreationists and avalanche professionals in their evaluation of the avalanche hazard.

The Avalanche problems  may be the most important part of the bulletin.

Very large avalanche caused by the avalanche problem Persistent weak layer. Photo: Torbjørn Lundhaug/regObs
An example of a presentastion of an avalanche problem in our bulletins. Please note that red areas indicate the most exposed terrain.

An avalanche problem, as presented in our bulletins, consists of these factors:

  • Expected weak layer to create avalanches
  • Advice - how to avoid the problem
  • An European icon to illustrate the problem
  • Expected distribution of the avalanche problem in the terrain.
  • What type of avalanche is expected
  • Expected avalanche sizes
  • How easy can an avalanche be triggered

  • Probability for triggering an avalanche

We currently use the following avalanche problems in our bulletins. If you are familiar with avalanche problems from other forecasting services, you will easily recognize these.

Varsom uses the avalanche problems agreed upon in the European Avalanche Warning Services (EAWS). 

Need more imput? Consider spending five minutes on this video from our colleagues at the National Avalanche Center.


If you wonder how to avoid avalanches in different situations, read the bulletin and follow the advice onnected to each avalanche problem.