Bollettino valanghe

Cariboos

Dec 5 – 6, 2013Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 13 years ago

Pericolo valanghe

Sat
Sun
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

This forecast is based on limited field observations. If you head into the mountains, please send a note to [email protected] and let us know what you saw.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–4
    Outflow winds are reverse-loading and cross-loading exposed slopes forming fresh and touchy wind slabs below ridge crests and behind terrain features. Don't let wind slabs in unusual places catch you by surprise.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–5
    Managing these persistent slabs can be tricky; they are stubborn and direct evidence of unstable snow may be lacking, but they can produce very destructive avalanches. Treat large open slopes with suspicion until stability is confirmed.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Synopsis: An arctic ridge of high pressure will persist over the BC Interior and Yukon for the next several days. Friday: Mainly sunny with moderate northerly alpine winds. Treeline temperatures expected to be around -20. Saturday: Mainly sunny with some thin cloud possible, moderate northwesterly alpine winds. Treeline temperatures expected to be around -20. Sunday: Increased cloud, windy, and cold.

Avalanche Summary

No recent avalanches have been reported but incoming field data is still very limited. Avalanche activity in the neighbouring Monashee Mtns seems to be slowing down.

Snowpack Summary

30-50 cm of recent storm snow overlies a variety of old snow surfaces including surface hoar in sheltered areas and/or sun crust on steep south facing slopes. In some neighbouring areas the buried surface hoar is giving easy to moderate sudden planar compression test results, while elsewhere the storm snow has yet to settle into a sufficiently cohesive slab. There are two distinct weaknesses within the mid and lower snowpack: the early November surface hoar/facet/crust interface is down roughly half way (50-60cm) and the October rain crust is near the ground. Recent snowpack tests gave easy results on the early November mid-pack interface where it was found to be facets under a crust. Cold clear weather is likely promoting surface hoar growth and near surface faceting.

Regioni coperte