Boletín de aludes

South Columbia

Avalanche Canada
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Peligro de aludes

Sun
Mon
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Desactualizado: este boletín caducó 5 months ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Continuously verify conditions and keep an eye out for overhead hazard.

Check out this conditions video for more.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3

    Keep your head up and look for overhead hazard. Minimize time travelling under these hhazards.

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–2

    Wind slabs may be found in the immediate lee of peaks and ridges, and may be poorly bonded to the underlying crust.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2

    Wet loose avalanches will become likely with brief periods of solar input.
    Dry loose avalanches are possible on shaded slopes where new snow hasn't formed a slab.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of solar radiation will affect the snowpack.

Avalanche Summary

Over the past few days numerous natural cornice failures were reported. Even without triggering slabs on the slopes below debris piles were up to size 2.5.

Numerous wet and dry loose avalanches have been observed in steep or extreme terrain. These avalanches have grown in size, up to size 2.

Snowpack Summary

Surface conditions are highly variable:

·        In exposed alpine and treeline terrain previous wind may have scoured ridge tops and formed small wind slabs in lee features.

·        Sheltered treeline features may still hold dry snow.

·        A crust exists on or near the surface on sun exposed slopes and all other aspects below 2300 m.

Convective flurries over the past two weeks have deposited highly variable amounts of snow above the atmospheric river crust. Depending on drainage and elevation, you may find 30 to 100 cm above this crust, which extends to at least 2300 m.

Older weak layers are unreactive and buried at least 150 cm deep.

Weather Summary

Friday Night
Cloudy. 5 cm of snow in the north of the region and 0 to 2 cm elsewhere. 30 km/h west ridgetop wind. Treeline temperature -4 °C. Freezing level 1600 m.

Saturday
Mostly cloudy. 1 cm of snow possible. 30 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 1700 m.

Sunday
Mix of sun and clouds. 1 cm of snow at treeline, rain at lower elevations. 20 km/h west ridgetop wind. Treeline temperature -1 °C. Freezing level 1900 m.

Monday
Mix of sun and clouds. 1 mm of rain at treeline, snow in the alpine. 30 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Carefully evaluate steep lines for wind slabs.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Loose avalanches may start small, but they can grow and push you into dangerous terrain.

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