Bollettino valanghe

South Rockies

Apr 15 – 16, 2014Avalanche Canada
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Archiviato · scaduto 12 years ago

Pericolo valanghe

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

In sintesi

This bulletin was created using very limited field data. If you are out in the mountains, please send your observations to [email protected]

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–4
    Daytime heating makes cornices droop and become unstable. A large cornice release could also trigger a deep persistent weak layer and produce a very large avalanche.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    3–6
    This problem is becoming less likely with more cloud and slightly cooler temperatures but it still deserves some respect. Minimize your exposure on large steep alpine slopes, especially if the snow surface is moist or wet.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Wednesday: Cloudy with flurries and isolated sunny breaks. The freezing level is around 1600 m and ridge winds are light to moderate from the SW. Thursday: Cloudy with flurries or showers – 5-15 cm. The freezing level is around 1800 m. Winds are moderate from the South.  Friday: Cloudy with flurries or showers. The freezing level is around 1800 m. Winds are light to moderate from the W-SW.  

Avalanche Summary

No new avalanche activity was reported on Monday. Observers did report evidence of several recent natural cornice collapses, some of which triggered thin slabs in steep terrain.

Snowpack Summary

Warm temperatures and strong sunshine likely created a solid melt-freeze crust on the surface in most places. High shady slopes may still have 10-15 cm of dry snow sitting on a previous crust. The surface crust will likely break down during the day resulting in moist or wet surface snow. The deep facet/crust persistent weakness buried at the beginning of February (now down up to 80-100 cm) should stay on your radar, especially on all alpine slopes that will see the intense sun tomorrow. Any activity at this interface would be large and destructive. Also, give large sagging cornices a wide berth when traveling on or below corniced ridges.

Regioni coperte