Boletín de aludes

Brandywine

Feb 9 – 10, 2025Avalanche Canada
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Archivado · caducó 2 years ago

Peligro de aludes

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

Lo esencial

Conditions are tricky despite the moderate danger rating and sunny weather.

The best and safest riding will be on slopes with soft snow and no slab properties.

Problemas de aludes

  • Wind Slabs

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

    Wind slabs have formed on a variety of aspects at upper elevations. Use terrain like ridges or ribs to avoid areas of wind-loaded snow

  • Persistent Slabs

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

    A persistent weak layer of crust, facets or surface hoar is buried 30 to 70 cm deep. This layer resulted in some close calls for people last week.

Confidence

Moderate

Avalanche Summary

Numerous small to very large avalanches were reported in the past week. Natural activity has declined, but small human-triggered slides persist daily. On Friday two separate parties accidentally triggered wind slabs near Whistler, and whumpfing was described in this MIN report.

Last Tuesday two notable avalanches were reported: One resulted in a person being fully buried for a lengthy time (MIN report here) and another was a near-miss for a snowmobiler. (Photo below)

Snowpack Summary

Wind-affected snow and wind slabs formed by recent shifting wind can be found on various aspects at upper elevations. Steep sunny slopes may be moist or have a thin surface crust, shady slopes are growing surface hoar. 35 to 70 cm of old storm snow is slowly settling and has remained dry and powdery in many areas with cold temperatures. This snow is sitting on a weak layer that developed in late January: In most areas, it is a hard slippery crust, however, on shady, upper-elevation slopes, it may rest on faceted grains or surface hoar. The mid and lower snowpack is well-settled and bonded with no other layers of concern.

Weather Summary

Saturday Night

Clear skies. 10 to 15 km/h northwest ridgetop wind. Treeline temperature -12 °C.

Sunday

Sunny. 15 km/h northerly ridgetop wind. Treeline temperature -11 °C.

Monday

Sunny. 15 to 25 km/h northeast ridgetop wind. Treeline temperature -13 °C.

Tuesday

Sunny. 20 km/h north ridgetop wind. Treeline temperature -15 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid areas where the snow feels stiff and/or slabby.
  • Be aware of the potential for large avalanches due to a buried crust.
  • Avoid lee and cross-loaded slopes at alpine and treeline elevations.
  • Keep in mind that human triggering may persist as natural avalanches taper off.

Regiones cubiertas