Bollettino valanghe

Lechquellen Mountains

LWD Vorarlberg
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Pericolo valanghe

Above 2,200 m
2 · Moderato
Below 2,200 m
1 · Debole
Non aggiornato — questo bollettino è scaduto 3 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Caution: weak layers and older snowdrift accumulations at high altitudes

Problemi valanghivi

  • Wind slab

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  • Persistent weak layers

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Avalanche Activity

Caution: weak layers and older snowdrift accumulations at high altitudes

Danger zones increase in size and frequency with ascending altitude, esp on steep shady slopes and in wind-loaded gullies and bowls. Large additional loading 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 larger size.

Snowpack Structure

The snowpack is well consolidated in the morning, softens only slowly. Fresh and older snowdrifts increase in size and frequency with ascending altitude. Inside the fresh snow and drifts of recent days are weak layers. 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.

Weather Synopsis

Nocturnal hours: overcast skies, some rainfall and snow showers above 1000 m. Saturday: poor visibility due to low lying clouds, only occasional bright intervals. Minor snow showers, increasing in afternoon and evening. At 2000 m: -5 degrees. Light N/NE winds.

Tendency

Sunday will be instable with a bit of sunshine. It is expected to remain dry. Light winds, cold. Avalanche danger levels are not expected to change significantly.

Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)

Regioni coperte