Gliding snow
- All elevations
Often favorable conditions in morning, continuing wet-snow avalanches
Often favorable conditions in morning, continuing wet-snow avalanches
Avalanche danger is low in the morning, during the course of the day increasing slides and small-to-medium wet-snow avalanches in sunny steep terrain. Also: glide-snow avalanches are possible at any time of day or night. Avoid zones below glide cracks. Fresh small snowdrifts can trigger a slab avalanches in steep shady terrain above the treeline behind discontinuities and in wind-loaded gullies and bowls. Beware the risks of being forced to take a fall.
The snowpack is often wet up to high altitudes, this reinforces gliding movements. Small drifts are trigger-prone esp. on shady slopes. Nocturnal outgoing radiation is good in spite of nocturnal clouds, often forming a melt-freeze crust, softening quickly the next morning, causing the snowpack to forfeit its firmness. Because ski areas are closed there is little information about snowpack layering at high altitudes. Apart from the snowpack wetness, no marked avalanche problem prevails.
Nocturnal hours: Dry, mild, reduced nocturnal outgoing longwave radiation. Wednesday daytime: Mild foehn conditions, high clouds and Sahara dust will hamper the sunshine. At 2000 m: +9 degrees. Moderate southerly winds, stronger in foehn lanes.
Conditions will become less stable, and also cooler, with intermittent showers or thunderstorms in afternoon. Danger of wet-snow avalanches rises during the course of the day slightly. The daily forecasts are at an end for this season. Further reports will be published in case of unusual situations.
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)