Boletín de aludes

South Coast Inland

Apr 24 – 25, 2022Avalanche Canada
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Archivado · caducó 4 years ago

Peligro de aludes

Tue
Wed
Alta montaña
2 · Moderado
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil
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Lo esencial

Be aware of heightened avalanche conditions in alpine terrain where there are hazards from cornices and wind slabs.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–1.5

    Small wind slabs could form in alpine terrain on Monday.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1.5–2.5

    Cornices may be weak and reactive to human triggers. They create a significant falling hazard, and may produce large slab avalanches as they fall onto the slope below.

Confidence

High - We have a good understanding of the snowpack structure and confidence in the weather forecast

Weather Forecast

SUNDAY NIGHT: Cloudy with flurries brining 5-10 cm of snow above 1500 m, 30-50 km/h wind from the south, treeline temperatures around -1 C.

MONDAY: Unsettled weather with clouds and scattered flurries bringing 5-10 cm of snow above 1300 m, 20-40 km/h wind from the southwest, treeline temperatures drop to -3 C.

TUESDAY: Mostly cloudy, isolated flurries with up to 5 cm of snow above 1300 m, 20 km/h wind from the southwest, treeline temperatures around -5 C.

WEDNESDAY: Mostly cloudy, isolated flurries with trace amounts of snow above 1200 m, 20 km/h wind from the southwest, treeline temperatures around -6 C.

Avalanche Summary

Although observations are limited right now, there were a few reports of small wet loose avalanches (size 1) on sun-exposed slopes on Friday and Saturday. Looking ahead to Monday, there could be some new wind slabs forming in areas that receive more than 15 cm of snow.

Snowpack Summary

By Monday afternoon there could be 5 to 15 cm of new snow above 1300 m, possibly forming a few new wind slabs in steep alpine terrain. At treeline and above, this snow will fall on a melt-freeze crust, while lower elevations will have moist and rain soaked surfaces. Some dry snow has been reported above 2000 m on north aspects. The lower snowpack should be strong under the current cool weather, but large looming cornices remain a concern this time of year.

Terrain and Travel

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.

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