Bollettino valanghe

Banff Yoho Kootenay

Feb 28 – Mar 1, 2015Parks Canada
Vedi sulla mappa
Archiviato · scaduto 12 years ago

Pericolo valanghe

Sat
Sun
Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Have fun out there this weekend but watch out for isolated shallow snowpack areas, these areas exist in the terrain and travelers need to keep this in mind.  Large triggers such as a cornices still have the potential to trigger deep instabilities. PJ

Problemi valanghivi

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3
    The lower half of the snowpack is weak due to the presence of basal depth hoar and facet layers. Natural and human triggering is unlikely, but possible in steep open slopes with shallow snow, or south and west facing terrain during mid-day.

Weather Forecast

A ridge of high pressure is building on the coast and will bring cool Northwesterly flow over the weekend.  A disturbance on Sunday will collide with the ridge and bring light flurries that evening into Monday.  Cool temperatures will prevail through the period.

Snowpack Summary

A few cm's of cold loose snow sits on the surface.  The base of the snowpack is weak facets and depth hoar with a 40-60cm slab of stiff snow over top. Triggering would be difficult but is possible in open, shallow snowpack areas such as ridgetop features, cross-wind affected terrain features or moraines.

Avalanche Summary

No new avalanches reported today except for one small explosive triggered avalanche at one of the local ski areas to open up their last steep piece of terrain.

Confidence

Due to the number and quality of field observations

Regioni coperte