Boletín de aludes

Little Yoho

Jan 6 – 7, 2025Avalanche Canada
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Archivado · caducó 2 years ago

Peligro de aludes

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

Lo esencial

Great skiing can be found in much of the forecast region.

Be aware of strong wind values forecasted for Tuesday, as these winds are expected to increase natural avalanche activity in the region.

Problemas de aludes

  • Wind Slabs

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

    Small wind inputs have triggered isolated windslabs in the BYK region, and we expect similar effects in Little Yoho. With 20-30 cm of low-density snow available for transport, increasing winds on Tuesday will escalate both size and sensitivity of the problem.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1.5–3

    As in the BYK region, weak facets and depth hoar associated with remnant crusts can be found near the base of the snowpack. Evidence suggests that this problem is specific to shallower areas of the Little Yoho region. Avoiding thin areas will help limit your exposure to this problem.

Confidence

Moderate

Avalanche Summary

No new avalanches were observed or reported on Sunday in the Little Yoho region. We recommend that backcountry users closely monitor wind conditions over the next few days, as forecasted winds are expected to initiate a loose dry and wind slab cycle.

Snowpack Summary

25-45 cm unconsolidated snow makes up the surface of a 120-150 cm snowpack at treeline while 140-175cm can be found in the alpine. The mid-pack is generally strong but a weak crust/facet layer can often be found near the ground, particularly in shallower areas. Conditions within the Little Yoho Region are much better than areas further east in BYK.

Weather Summary

We’ll start the week with clear skies, light ridge-top winds, and freezing levels near the valley bottom on Monday. Clear skies will persist on Tuesday, though ridge winds will increase to strong. No precipitation is expected until the end of the week.

Terrain and Travel Advice

  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.
  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.

Regiones cubiertas