Bollettino valanghe

South Rockies

Feb 17 – 18, 2015Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 12 years ago

Pericolo valanghe

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

In sintesi

Checkout the latest South Rockies Blog for more details on conditions.Please become a member of Avalanche Canada today by going to avalanche.ca/membership

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–4
    Hard wind slabs may be lurking below ridge crests and in exposed gullies. These locally deep deposits can fracture over surprising distances above trigger points and into low-angled terrain, often catching people by surprise.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–3
    Not only a hazards in themselves, cornice falls can also act as heavy triggers for persistent slab avalanches on the the slope below.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    3–5
    Although unlikely, these highly destructive avalanches remain possible with heavy impacts (e.g. cornice falls and surface avalanche stepping down) in the right spot (e.g. thin rocky areas). Daytime warming will also increase sensitivity.

Confidence

Good

Weather Forecast

Mainly sunny and dry for Wednesday with some cloud cover and possible flurries expected for Thursday and especially Friday. Above freezing alpine temperatures are expected on Wednesday; however, freezing levels should drop back down to 1700 m for Thursday and 1500 m Friday, and valley bottoms overnight throughout the forecast period. Light southwesterly winds are expected to pick up to moderate throughout the day on Wednesday, before decreasing to light on Thursday and shifting to northwesterlies on Friday.

Avalanche Summary

No new avalanches reported.

Snowpack Summary

A thick supportive crust has frozen on the surface at lower elevations, with a trace amount of fresh snow on top in some places. Two weak crusts in the snowpack remain a concern for persistent slabs and step-down avalanches. One buried mid-January was recently found down 70 cm and and the other buried mid-December was found down 135 cm at treeline where the total depth was 200 cm.

Regioni coperte