Boletín de aludes

Lizard-Flathead

Dec 23, 2017Avalanche Canada
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Archivado · caducó 9 years ago

Peligro de aludes

Sun
Mon
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
2 · Moderado
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Lo esencial

Deep powder offers excellent riding in many areas, but there's a highly variable weak layer that warrants cautious terrain choices. Read this forecasters' blog for more details.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    Low density snow and sustained alpine winds are a recipe for touchy wind slabs in exposed terrain.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3
    A variable weak layer buried approximately 60 cm below the surface will likely remain sensitive to human-triggered avalanches in areas with stiffer snow. Sheltered areas with steep, unsupported terrain are the most likely places to be caught.

Avalanche Summary

A natural avalanche cycle was observed in alpine terrain on Friday with storm slabs up to size 2 (typically 20-40 cm deep). Explosive avalanche control triggered similar sized avalanches.

Confidence

Moderate - Wind effect is extremely variable

Weather Forecast

SATURDAY: Dry and sunny, moderate northwest winds, temperatures around -15 C.SUNDAY: Sunny with increasing clouds, light northwest winds, temperatures around -15 C.MONDAY: Mix of sun and cloud, light northwest winds, temperatures around -18 C.

Snowpack Summary

Around 50 to 80 cm recent new snow now rests on a variety of old surfaces. These old surfaces include crusts on south through west facing slopes, wind-scoured slopes and, in sheltered terrain at and below treeline, large feathery surface hoar crystals. Lower in the snowpack, you should be able to find a hard crust that was buried near the end of November. This crust is approximately 30 cm thick and extends from 1600 m to mountain top on all aspects. Average snowpack depths at treeline in the region range from 100 to 140 cm.

Regiones cubiertas