Lechquellen Mountains

Caution: fresh and older snowdrift accumulations at high altitudes

Caution: fresh and older snowdrift accumulations at high altitudes

Danger zones increase in size and frequency with ascending altitude. One sole person can trigger mostly small avalanches in steep ridgeline terrain, in wind-loaded gullies and bowls. Superficially triggered avalanches can sweep away the thoroughly wet old snowpack and grow to large size. Small fresh snowdrifts are still prone to triggering. In steep rocky terrain, loose-snow slides can trigger small-to-medium sized glide-snow avalanches on steep grassy slopes as a result of solar radiation.

Fresh and older snowdrifts increase in size and frequency with ascending altitude. Inside the fresh snow and drifts of recent days are weak layer with graupel. Bonding deteriorates with ascending altitude. The fundament is moist up to high altitudes, the snowpack can glide over the smooth ground. As temperatures drop the danger of wet-snow avalanches recedes. A melt-freeze crust has formed beneath the fresh snow. Not much snow below 1500m.

Nocturnal hours: some clouds will move in from NW zones, it will remain dry and cold. Wednesday: cloudbanks will move in early, later convective cloud build-up will be added to it. Some sunshine. At 2000 m: -8 degrees. Mostly light northerly winds, shifting to westerly.

Thursday will be very sunny, some clouds possible in the afternoon. It will remain quite cold. Avalanche danger levels are not expected to change significantly.