Varsom uses the standards of the European Avalanche Warning Services (EAWS).
The avalanche problem is related to current or most recent snowfall.
New snow (loose snow avalanches) When the new snow are unbound. The avalanche start in a point and gets wider on its way down.
New snow (slab avlanches) - Wind and high temperatures can start bonding processes and make slabs in the new snow. Slab avalanches in new snow are often easy to trigger.
Wind drifted snow (slab avalanches) is related to snow transported by wind, with or without a concurrent snowfall.
Persistent weak leyer (slab avlanches) - Avalanches can be released from distance. The weak layers typically include buried surface hoar, depth hoar og faceted crystals. Mostly human triggered avalanches. Weak layers can persist for months.
Gliding snow The entire snowpack is gliding on the ground. Typically on smooth rock zones.