Boletín de aludes

Glacier

Mar 7 – 8, 2024Avalanche Canada
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Archivado · caducó 3 years ago

Peligro de aludes

Sat
Sun
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
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Lo esencial

The snowpack remains primed for large human triggered avalanches. Cautious route-finding and conservative decision-making is essential.

Have plans to ski conservative, well-supported slopes with limited overhead exposure.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2.5

    Variable winds have created wind slabs in atypical lee features.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    2–4

    This crust-facet combo (Feb 3rd) was created by an extended cold, clear period without snow earlier this month. 80-140cm now sits on the persistent weak layer which remains primed for human triggering (see FB video). If triggered resulting avalanches could be very large in size.

Weather Summary

Cool and dry weather for the next few days, the late winter sun packs a punch and will increase the likelihood of avalanches as it warms the upper snowpack

Thurs: Cloudy with sunny periods, high -10°C, light SW winds, FZL at valley bottom.

Fri: Trace precip, high -4°C, Moderate SW winds, FZL 1300m.

Sat: 7cm, low -10°C, moderate S winds gusting to strong, FZL 1800m.

Terrain and Travel Advice

  • Use conservative route selection. Choose simple, low-angle, well-supported terrain with no overhead hazard.
  • Remote triggering is a concern, avoid terrain where triggering slopes from below is possible
  • Even brief periods of direct sun could produce natural avalanches.

Confidence

Moderate

Avalanche Summary

On Monday, a field crew remote-triggered a sz 1 on the Feb 3 crust while approaching a snow profile site. Under the Rampart a sz 3 was observed from the last few days showing very wide propagation.

A skier-triggered a sz 2 slab on Avalanche Crest Sunday.

Last week, a group triggered a size 3 in the Camp West area, also failing on the Feb 3rd crust.

We continue to see daily reports in the region of human triggered avalanches on the Feb 3rd layer - some failing in small forest openings.

Snowpack Summary

80-140cm of settled snow sits atop sugary facets. These facets are not bonding/sticking well to the widespread, very firm Feb 3 crust. This crust is a significant persistent weak layer and will be the main layer of concern for the foreseeable future.

To add to the concerning mix, variable winds over the last 3 days have created soft wind slabs at Tree-line and above on most aspects.

Regiones cubiertas