Boletín de aludes

Purcells

Feb 12 – 13, 2024Avalanche Canada
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Archivado · caducó 3 years ago

Peligro de aludes

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

Tracks on a slope do not mean it is safe.

This is a low-probability, high-consequence snowpack that's best managed by riding conservative terrain.

Problemas de aludes

  • Wind Slabs

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

    Small wind slabs are starting to build.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2.5–3.5

    A weak layer near the base of the snowpack is a concern where a crust buried 10 to 20 cm is not supportive. Generally at higher elevations in the alpine and steep, rocky, open features at treeline is where triggering this layer is possible.

Confidence

High

Avalanche Summary

A large avalanche near Golden from Jan 29th reported in this MIN and pictured in this MIN, is a perfect example of the sporadic, deep persistent avalanche activity that continues to occur as recently as Saturday. Steep, rocky, treeline and alpine terrain where the crust is not supportive are likely trigger spots.

Several dry loose avalanches up to size 1 were reported on Friday.

Snowpack Summary

New snow has buried various layers of soft snow, wind-affected, and sun crusts. Further burying a crust now down 15 to 20 cm. This crust is generally supportive but tapers in the alpine and may be unsupportive to riders.

The midpack is generally faceted and the lower snowpack contains weak faceted grains, depth hoar, and crusts that continue to produce sporadic large avalanches.

Weather Summary

Sunday Night

Mostly cloudy with 0 to 5 cm of snow. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Monday

Mostly cloudy with 0 to 5 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Tuesday

Mostly clear skies. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -12 °C.

Wednesday

Clear skies. 0 to 15 km/h northeast ridgetop wind. Treeline temperature -15 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be mindful that deep instabilities are still present and have produced recent large avalanches.
  • Be aware of the potential for surprisingly large avalanches due to deeply buried weak layers.

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