Lechquellen Mountains

Trigger-prone snowdrifts, considerable avalanche danger

The fresh fallen snow from the weekend was transported by intermittently strong and gusty southerly winds, fresh snowdrift accumulations were generated, lying deposited soft loose layers or atop blanketed graupel. Strong southerly winds are still transporting fresh snow and generating fresh snowdrift accumulations in the typical foehn lanes at high altitudes. The fresh snow and drifts often lie deposited atop melt-freeze encrusted layers, bonding is often poor. Below 2200 m the old snowpack is thoroughly moist, wet down to the ground, this reinforces gliding over smooth ground.

Nocturnal hours: foehn conditions by full moon, clouds dispersing somewhat. Tuesday daytime: Cirrus clouds will hamper the sun somewhat, light can be diffuse. In Rätikon and Silvretta, many peaks in fog. At 2000 m: -5 to 0 degrees. Brisk southerly winds, often stormy in foehn lanes.

Trigger-prone snowdrifts, considerable avalanche danger

Freshly generated snowdrift accumulations at high altitudes are prone to triggering, and are triggerable by 1 person. Danger zones will increase in both size and frequency as the day unfolds. In addition, on steep shady slopes in high alpine regions the interim layers inside the old snowpack are often trigger-prone. Medium-sized slab avalanches can be triggered by large additional loading there. In high alpine regions the danger zones are more frequent. Backcountry tours require a cautious route selection. Due to warmth and radiation, slides and loose-snow avalanches are possible, esp. on sunny sloes. Below 2600 m, glide-snow avaalnches continue to be possible, and can grow to large size where snowfall is heavy.

On Wednesday, skies heavily overcast, some precipitation, snowfall level at 1500 m. Danger of dry-snow avalanches will recede somewhat. Gliding snow activity will persist.