Bollettino valanghe

Cariboos

Mar 27 – 28, 2023Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 4 years ago

Pericolo valanghe

Wed
Thu
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Wind slabs are the main concern. Take note of the wind direction and anticipate slopes where wind slabs may exist.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5

    Newly formed thin wind slabs may be found near ridge crests on westerly aspects.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2.5–4

    A weak layer of facets exists near the base of the snowpack. The likelihood of human triggering is low given the layer's depth, but large triggers such as cornice failures or smaller avalanches in motion have the potential to produce very large avalanches with surprisingly wide propagation. Suspect terrain for human triggering includes steep, shallow, and rocky terrain where the snowpack transitions from thin to thick.

Confidence

High

Avalanche Summary

No significant avalanches were reported in the past couple days.

Snowpack Summary

Roughly 5 to 15 cm of new snow accumulating over the past 3 days is being redistributed by moderate northeast winds. These new wind slabs sit over a crust on solar aspects and all aspects below 1500 m. On high north-facing terrain, these wind slabs may sit over facets and surface hoar.

The mid-snowpack is generally strong but the lower snowpack is a different story. The November facets are still prominent at the base of the snowpack. They are showing signs of strengthening but this layer remains a concern in rocky, shallow, or thin to thick snowpack areas at treeline and above.

Weather Summary

Monday Night

Mostly clear. Light northeast wind. High of -4 °C at treeline.

Tuesday

Mainly sunny. Light northeast wind. High of -2 °C at treeline. Freezing level at 1500m.

Wednesday

Mix of sun and cloud. Light northeast wind. High of -3 °C at treeline. Freezing level at 1500m.

Thursday

Mostly cloudy with isolated flurries. Light to moderate northwest wind. High of -1 °C at treeline. Freezing level at 1700m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • In areas where deep persistent slabs may exist, avoid shallow or variable depth snowpacks and unsupported terrain features.
  • Minimize your exposure time below cornices.

Regioni coperte